Wrong again! It applies to all the unsaved - there is only one salvation. Do you see the "blinded the minds of them which believe not" in 2 Co 4:4? Do you see how that verse refers to all of the spiritually blind - all of the unsaved and not just the Jews - as John 12:37, 39, 40 also applies to all of the unsaved? You lack a basic understanding of how God wrote the Bible and of how it must be interpreted - probably because the Holy Spirit is not moving within you to compare the spiritual with the spiritual.
[2Co 4:4 KJV]
4 In whom the god of this world hath blinded the minds of them which believe not, lest the light of the glorious gospel of Christ, who is the image of God, should shine unto them.
[Jhn 12:37, 39-40 KJV]
37 But though he had done so many miracles before them, yet they believed not on him: ...
39 Therefore they could not believe, because that Esaias said again,
40 He hath blinded their eyes, and hardened their heart; that they should not see with [their] eyes, nor understand with [their] heart, and be converted, and I should heal them.
You should have been able and aware enough to compare and correlate 2 Cor 4:4 with John 12:37, 39,40 and realize they're speaking of the same thing.
You are of those described in the following verses - that no matter how much/often someone tries to explain/re-explain to you, you just seem unable to get it.
[2Ti 3:7 KJV] 7
Ever learning, and never able to come to the knowledge of the truth.
[1Co 2:13-14 KJV]
13 Which things also we speak, not in the words which man's wisdom teacheth, but which the Holy Ghost teacheth; comparing spiritual things with spiritual.
14 But the natural man receiveth not the things of the Spirit of God: for they are foolishness unto him: neither can he know [them], because they are spiritually discerned.