I don't know. I think presidents need to be more open about their faith and actually attend church, but Trump did not go to the church to pray or make a statement calling for unity (as we're all God's children). That was not the time for a political stunt, and I really don't like the Bible being used as one.
I can't vote for Biden because of abortion, but I'm starting to question whether I can vote for Trump again (that's not to say that I've come to the conclusion that I can't, because I still don't know). I suspect that similar thoughts are going through the minds of a lot of Christians right now, especially those who only mildly supported Trump to begin with.
I totally get where you are coming from and he can be a lot better with his words at times but I hope you vote for Trump in the end.