Much like amateur surgery; amateur psychology, even with the best of intentions, can have severely damaging consequences. It’s why I leave it to the pros.
Regarding your crisis/nihilism; it honestly doesn’t look like you’re in the crisis anymore. I think you’ve discovered your answer, now it’s just a matter of refining it.
I went through a similar experience myself. I wasn’t raised with religion, but I was told stories from the Bible and read it as a kid. Got real into it, went to a Catholic High school and university. Went through RCIA and was a week out from baptism before experiencing a pretty major crisis of faith that basically shook everything to the core and left me questioning everything. The deeper I looked, the more questions I had and the less answers I found. I eventually just came to the conclusion that religion didn’t matter to me. I didn’t care if there was or was not a god, heaven, hell, etc. It became inconsequential. Part of me hopes there isn’t a god, just because that would make things far easier to understand, but if it turned out there was one, it honestly wouldn’t impact how I’m living my life. Either he is as forgiving as everyone says he is and he’ll just see this all as angst and forgive me, or he’s as big an asshole as I think he is and I’ll go to Hell but at least it means I was right, haha.
You might dig Nietzsche’s “The AntiChrist”. Nietzsche can be a little tough to read sometime, but in that piece he’s just totally dialed in and on fire. Will show you that you aren’t the first to think these thoughts, and it will give you some solid articulation on it. Consequently, if you are looking for something on the “pro-god” side, you might consider Kierkegaard’s “The Sickness Unto Death”, which goes into detail about how life IS meaningless and only faith allows us to escape despair. I appreciate how little time he spends trying to prove God’s existence and more explaining why we NEED him to exist.
That all being said, I still really dig Christianity as a message. You read the gospels and Jesus had a really groovy message; love people and look beyond their sins. Consequently, part of the reason I gave up the faith was that I wasn’t strong enough to live that message. There are some folks I just don’t see myself ever loving or forgiving.
This is honestly something I can talk on WAY too much, haha. I’ll try not to flood the log too much, as this can be a bit of a tender subject, but know you aren’t alone.