If irresistible grace is wrong, and people have a choice to believe or reject, then total depravity (meaning an inability to believe) and unconditional election can’t stand.
The only way for us to be able to reject is for us to be able to accept. If we have no ability to accept Jesus’ teaching and believe in Him, then all we are able to do is reject and disbelieve. We would have no ability to respond in either way if we don’t have the ability to respond in both ways. So my next change of mind was to drop total depravity.