What makes you confident Christianity isn’t true?

Don’t say because there’s no proof of an afterlife, soul or god because it’s not helpful in my confidence. I don’t want to believe billions will be tortured for eternity but the thoughts just don’t go away. I still believe in a god, afterlife, and a soul, just not in this religion anymore. Even if you aren’t completely confident Christianity isn’t true and you are still scared like me, what makes you hopeful it isn’t true.