John 6:37 "All the Father gives Me shall come to Me, and the one who comes to Me I will certainly not cast out."
God has ordained some to come to Jesus for salvation. Every single person God "has given" will come, without fail.
When Jesus was walking on earth, who was it that was given to him by the Father? Who was he there to train and disciple?
ANSWER: THE APOSTLES. WHO ARE THE REMNANT OF ISRAEL, THE REST WERE HARDENED.
You are making the hermeneutic error of taking a passage out of its historical context, ignoring the audience (who was Israel) and proof texting by presuming this passage supports your views of soteriology.
John 6:44 "No one can come to Me, unless the Father who sent Me draws him..."
Why don't Calvinists ever quote the very next verse?
Again, who was being drawn to Jesus at this time and who was being blinded in their rebellion so that they could not see, hear or repent?
ANSWER: The remnant (apostles) were selected by God to be taught by Jesus, the rest of Israel was being hardened.
As Paul clearly explains in Romans 11: What Israel sought so earnestly it did not obtain, but the remnant did. The others were hardened.
Don't you see? His audience had two groups of people.
1. Israelite who were being blinded in the rebellion (see John 12:39-40)
2. Israelites who were not being blinded, but being revealed the truth and taught by Jesus so they could be the foundation for the church to come.
One group is being DRAWN while the other group is being blinded. However, it is God's will "that everyone who looks to the Son and believes in him shall have eternal life." And Jesus tells us, "When I am lifted up from the earth, will draw all men to myself." (Jn 12)
At this time in Jn 6 he has not been lifted up and the Jews remain blinded. THAT IS WHY THEY CANNOT BELIEVE. IT HAS NOTHING TO DO WITH BEING BORN TOTALLY DEPRAVED. IT HAS TO DO WITH A NATION OF ELECT PEOPLE BEING BLINDED WHILE A FEW OF THEM HAVE BEEN SELECTED FOR A NOBEL PURPOSE.