Religion as taught in schools or many (most?) churches is indeed mostly indoctrination. I've gone the full spectrum, from practicing Christian with a real fear of God as I was taught since I was a kid until 13 then atheist until 25 then slowly getting back my faith by learning a lot about it from different sources.

Now I say I'm as sure that "God" exists as I am of gravity. Too many synchronicities have happened to me for it to just be coincidence. However I still believe that church is mostly a corrupt institution with very few exceptions.

I know Jordan Peterson is a polarizing figure but his biblical lectures are very good and seem like they were created by a different person than he currently presents himself. I'd also recommend Ram Dass and especially Alan watts talks about Christianity