John 15:4-5 is talking about total inability, but not the total inability of unbelievers. Instead, Jesus is teaching about the total inability of disciples to do anything in the Kingdom of God by their own strength and resources.
John 8:43 is not a statement about the lifelong inability of some people to believe in Jesus for eternal life, but is a warning to those who reject the Gospel, continuing instead to deceive themselves.
John 6:44, far from being verses about exclusion and inability, are staggering statements from Jesus that in Him, all are accepted, all are invited, and all are welcome. John 6:44 does not teach anything related to Calvinism, but the very opposite.
Calvinists use John 3:3 to defend Total Inability, but when John 3:3 is understood is context, it teaches the exact opposite. It is because people can understand the hope, grace, love, and mercy found the gospel of Jesus Christ that so many people find the gospel compelling.
Calvinist use Jeremiah 17:9 to say that humans are deceived and cannot believe. But Jeremiah 17:9 is actually an encouragement to believe in God! Jeremiah 17:9 does not teach total inability or total depravity.