I've shown where Paul received the GC the SAME WAY the 11 did. Matthias didn't. Nor any others. Only 12 men received the GC face to face.
More error.
Let's try this again.
Luke 24
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33] And they rose up the same hour, and
returned to Jerusalem, and found the eleven gathered together, AND THEM THAT WERE WITH THEM,
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34] Saying, The Lord is risen indeed, and hath appeared to Simon.
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35] And they told what things were done in the way, and how he was known of them in breaking of bread.
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36] And as they thus spake, Jesus himself stood in the midst of them, and saith unto them, Peace be unto you.
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37] But they were terrified and affrighted, and supposed that they had seen a spirit.
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38] And he said unto them, Why are ye troubled? and why do thoughts arise in your hearts?
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39] Behold my hands and my feet, that it is I myself: handle me, and see; for a spirit hath not flesh and bones, as ye see me have.
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40] And when he had thus spoken, he shewed them his hands and his feet.
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41] And while they yet believed not for joy, and wondered, he said unto them, Have ye here any meat?
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42] And they gave him a piece of a broiled fish, and of an honeycomb.
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43] And he took it, and did eat before them.
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44] And he said unto them, These are the words which I spake unto you, while I was yet with you, that all things must be fulfilled, which were written in the law of Moses, and in the prophets, and in the psalms, concerning me.
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45] Then opened he their understanding, that they might understand the scriptures,
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46] And said unto them, Thus it is written, and thus it behoved Christ to suffer, and to rise from the dead the third day:
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47] And that repentance and remission of sins should be preached in his name among all nations, beginning at Jerusalem.
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48]
And ye are witnesses of these things.
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49]
And, behold, I send the promise of my Father upon you: but tarry ye in the city of Jerusalem, until ye be endued with power from on high.
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50] And he led them out as far as to Bethany, and he lifted up his hands, and blessed them.
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51] And it came to pass, while he blessed them, he was parted from them, and carried up into heaven.
As we just read, Jesus appeared not only unto "the eleven" (Judas was already dead at this time), but also unto "THEM THAT WERE WITH THEM" (vs. 33), and nowhere in the remaining narrative did these "THEM THAT WERE WITH THEM" depart.
If you believe that they did, then show us where it says so in scripture.
Good luck with that.
In fact, these "THEM THAT WERE WITH THEM" were among those whom JESUS COMMISSIONED "that repentance and remission of sins should be preached in his name among all nations, beginning at Jerusalem" (vs. 47) while telling them "and ye are witnesses of these things" (vs. 48).
Not only this, but he then told "the eleven, AND THEM THAT WERE WITH THEM" (vs. 33) to "tarry...in the city of Jerusalem, until ye be endued with power from on high".
In other words, there were a lot more people than just "the eleven" present when Jesus gave THE GREAT COMMISSION, AND we should also expect to see more than just "the eleven" tarrying in the city of Jerusalem as a result, AND WE WILL in just a moment.
This same Luke who wrote this gospel account also wrote the book of Acts, where we read:
Acts chapter 1
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1] The former treatise have I made, O Theophilus, of all that Jesus began both to do and teach,
[
2] Until the day in which he was taken up, after that he through the Holy Ghost had given commandments unto the apostles whom he had chosen:
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3] To whom also he shewed himself alive after his passion by many infallible proofs, being seen of them forty days, and speaking of the things pertaining to the kingdom of God:
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4]
And, being assembled together with them, commanded them that they should not depart from Jerusalem, but wait for the promise of the Father, which, saith he, ye have heard of me.
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5]
For John truly baptized with water; but ye shall be baptized with the Holy Ghost not many days hence.
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6] When they therefore were come together, they asked of him, saying, Lord, wilt thou at this time restore again the kingdom to Israel?
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7] And he said unto them, It is not for you to know the times or the seasons, which the Father hath put in his own power.
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8]
But ye shall receive power, after that the Holy Ghost is come upon you: and ye shall be witnesses unto me both in Jerusalem, and in all Judaea, and in Samaria, and unto the uttermost part of the earth.
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9] And when he had spoken these things, while they beheld, he was taken up; and a cloud received him out of their sight.
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10] And while they looked stedfastly toward heaven as he went up, behold, two men stood by them in white apparel;
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11] Which also said, Ye men of Galilee, why stand ye gazing up into heaven? this same Jesus, which is taken up from you into heaven, shall so come in like manner as ye have seen him go into heaven.
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12]
Then returned they unto Jerusalem from the mount called Olivet, which is from Jerusalem a sabbath day's journey.
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13] And when they were come in, they went up into an upper room, where abode both Peter, and James, and John, and Andrew, Philip, and Thomas, Bartholomew, and Matthew, James the son of Alphaeus, and Simon Zelotes, and Judas the brother of James.
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14] These all continued with one accord in prayer and supplication, with the women, and Mary the mother of Jesus, and with his brethren.
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15]
And in those days Peter stood up in the midst of the disciples, and said, (the number of names together were about an hundred and twenty,)
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16] Men and brethren, this scripture must needs have been fulfilled, which the Holy Ghost by the mouth of David spake before concerning Judas, which was guide to them that took Jesus.
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17] For he was numbered with us, and had obtained part of this ministry.
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18] Now this man purchased a field with the reward of iniquity; and falling headlong, he burst asunder in the midst, and all his bowels gushed out.
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19] And it was known unto all the dwellers at Jerusalem; insomuch as that field is called in their proper tongue, Aceldama, that is to say, The field of blood.
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20] For it is written in the book of Psalms, Let his habitation be desolate, and let no man dwell therein: and his bishoprick let another take.
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21]
Wherefore of these men which have companied with us all the time that the Lord Jesus went in and out among us,
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22]
Beginning from the baptism of John, unto that same day that he was taken up from us, must one be ordained to be a witness with us of his resurrection.
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23]
And they appointed two, Joseph called Barsabas, who was surnamed Justus, and Matthias.
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24] And they prayed, and said, Thou, Lord, which knowest the hearts of all men, shew whether of these two thou hast chosen,
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25] That he may take part of this ministry and apostleship, from which Judas by transgression fell, that he might go to his own place.
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26]
And they gave forth their lots; and the lot fell upon Matthias; and he was numbered with the eleven apostles.
Do I even need to explain what we just read?
Again, here we see the very same "eleven, AND THEM THAT WERE WITH THEM" (Luke 24:33) tarrying in Jerusalem, JUST AS JESUS HAD INSTRUCTED THEM TO (Luke 24:49), and "THE NUMBER OF NAMES TOGETHER WERE ABOUT AN HUNDRED AND TWENTY" (vs. 15), AND MATTHIAS WAS ONE OF THEM.
Got it?
In fact, as has already been pointed out to you, Matthias was with "the eleven", according to Peter who was one of "the eleven", "ALL THE TIME THAT THE LORD JESUS WENT IN AND OUT AMONG US, BEGINNING WITH THE BAPTISM OF JOHN, UNTO THAT SAME DAY THAT HE WAS TAKEN UP FROM US" (vss. 21-22), AND "THAT SAME DAY THAT HE WAS TAKEN UP FROM US" WAS THE DAY IN WHICH HE GAVE THEM, MATTHIAS INCLUDED, THE GREAT COMMISSION.
Seriously, you're in error.
We all make mistakes.
Just admit it, and all will be fine.
Between you and God, and between you and others.