You don't know what you're talking about and are contrary to scripture.
Mark 16:15-16
15And he said unto them, Go ye into all the world, and preach the gospel to every creature. 16He that believeth and is baptized shall be saved; but he that believeth not shall be damned.
Belief + baptism = salvation
Acts 2:38
(If you're still in sin, you're alienated from God)
"38Then Peter said unto them, Repent, and be baptized every one of you in the name of Jesus Christ for the remission of sins, and ye shall receive the gift of the Holy Ghost."
Acts 22:16
16And now why tarriest thou? arise, and be baptized, and wash away thy sins, calling on the name of the Lord.
1 Peter 3:20-21
"20Which sometime were disobedient, when once the longsuffering of God waited in the days of Noah, while the ark was a preparing, wherein few, that is, eight souls were saved by water. 21The like figure whereunto even baptism doth also now save us (not the putting away of the filth of the flesh, but the answer of a good conscience toward God,) by the resurrection of Jesus Christ:"
The above few scriptures contradict your statement and beliefs.
1st You're entitled to your beliefs. I'm confident no amount of debate will move you off of you're stated position. Today's water baptism is a public visible, outwardly expression, of one's inner spiritual change/dedication/commitment.
Salvation was offered 1st to the jew then to the gentile - Rom 1:16, 2:9 & 10
The Jew only needed to believe Jesus was their long promised Messiah/Savior. They had a God given sin management (Levitical) system.
Pre death & resurrection there was one (Jews only) assembly.
Eph 2:
11 Wherefore remember, that ye being in time past Gentiles in the flesh, who are called Uncircumcision by that which is called the Circumcision in the flesh made by hands;
12 That at that time ye were without Christ, being aliens from the commonwealth of Israel, and strangers from the covenants of promise, having no hope, and without God in the world:
13 But now in Christ Jesus ye who sometimes were far off are made nigh by the blood of Christ.
14 For he is our peace, who hath made both one, and hath broken down the middle wall of partition between us;
The door to salvation is opened to Gentiles at Cornelius (an Italian Roman centurion (Acts 10:1). It's here the two Jew & Gentile are made into the NT assembly.
(MY NOTE: Pre sin blood payment gentiles were strangers from the covenants of promise, having no hope & without God in the world)
Acts 10:
44 While Peter yet spake these words, the Holy Ghost fell on all them which heard the word.
45 And they of the circumcision which believed were astonished, as many as came with Peter, because that on the Gentiles also was poured out the gift of the Holy Ghost.
(MY NOTE: No water (it comes later) no adherence to any Mosaic laws) As Peters spoke they heard, believed & received Christ's salvation sealing (2 Cor 1:22, 5:5, Eph 4:4, 4:30), forever indwelling (Jn 14:16) Holy Spirit.
The message Peter preached & they believed was Christ's death & resurrection Verses 10:39 & 40. Also see Eph 1:13-4, Rom 10:9-10 & most famously 1 Cor 15:1-4.
Water baptism & communion are both decree's the Lord made.
Although upon receiving the Holy Spirit you're eternally saved (by Grace thru Faith) & have a secure place in Gods Heavenly Kingdom. You can not produce good/Godly fruit until you have outwardly/publicly partaken in water baptism. Where you proclaim by undertaking in the representation of Christ's death, burial & resurrection. Communion isn't a requirement for salvation either. Yet, it's another requirement for spiritual growth.
Any body can immerse someone into water. Only Jesus can baptize with His eternal salvation sealing Holy Spirit.
Matt 3:11 I indeed baptize you with water unto repentance: but he that cometh after me is mightier than I, whose shoes I am not worthy to bear: he shall baptize you with the Holy Ghost, and with fire:
(MY NOTE: John the Baptist made clear that Christ would baptize with the Holy Spirit)
1 Cor 12:13 For by one Spirit are we all baptized into one body, whether we be Jews or Gentiles, whether we be bond or free; and have been all made to drink into one Spirit.
(MY NOTE: By ONE SPIRIT the Holy Spirit. Believers are baptized into the Body of Christ. Only Christ can preform spiritual baptism)
Col 2:11 In whom also ye are circumcised with the circumcision """made without hands""", in putting off the body of the sins of the flesh by the circumcision of Christ:
(NOTE: The baptism of the Holy Spirit is a SPIRITUAL circumcision/covenant done By the Lord without hands)
Deut 30:6 (A) the Lord thy God will circumcise thine heart,