NONE of those passages teach, "everyone is able to belive on their own".
If you believe differently, try to EXEGETE those passages to demonstrate your bogus claim.
Here is the anti-Calvinist methodology:
1) quote random verses that don't support your claims;
2) When Calvinists rightly point out that the verses don't refute Calvinism, falsely accuse Calvinists of being under a "stronghold", or wearing "Calvinist-coloured glasses".
Of course they do
Do you have anything to offer besides bald denial
John 5:24–25 (KJV 1900) — 24 Verily, verily, I say unto you, He that heareth my word, and believeth on him that sent me, hath everlasting life, and shall not come into condemnation; but is passed from death unto life.
25 Verily, verily, I say unto you, The hour is coming, and now is, when the dead shall hear the voice of the Son of God: and they that hear shall live.
John 20:31 (KJV 1900) — 31 But these are written, that ye might believe that Jesus is the Christ, the Son of God; and that believing ye might have life through his name.
All those are written to the spiritually dead
And these list just one criteria
John 17:20 (KJV 1900) — 20 Neither pray I for these alone, but for them also which shall believe on me through their word;
Acts 18:28 (KJV 1900) — 28 For he mightily convinced the Jews, and that publickly, shewing by the scriptures that Jesus was Christ.
You need eisegesis to support Calvinism
Here is your methodology
Claim they don't support Calvinism
Ignore the fact you have eisegetically add to the verses what is never stated
