Hey Eric,
Sorry to hear what you’re going though, it sounds like a lot and I would recommend also seeing a therapist or psychologist who can help if you’re struggling with suicide or depression.
My own “personal journey” has me growing up in a Christian home, but during college and also during graduate school I started struggling with nihilism-moral nihilism, doubting the existence of God, wanting to die, etc. A lot of it was depression, but even a year after taking medication I was still struggling with the same thoughts. So I did what any person who wasn’t sure about Christianity perhaps should so-I picked up a Bible and started reading the gospels in the New Testament. It actually really helped me; I don’t want to say it “spoke” to me or anything, because I don’t know, but I started living out the teachings and my life slowly but surely improved. I’m not promising it will work, but it did help me.
In particular, some of the stuff Jesus said about judging other people was pretty raw-I felt called out. I was judging other people rather than trying to help. I wasn’t listening to others. I was struggling with anxiety which Jesus also talked about. This put me on a path to rediscovering Christianity in a way that really works in my life, and I have this sort of joy and peace that is really difficult to explain.
A lot of arguments for the existence of God (fine tuning, cosmological, etc) are compelling for showing at least the possibility or probability of a God existing (entire textbooks have been written on “natural theology”), but I don’t think most people come to Christianity because of these arguments-I think these arguments instead are ways of justifying or rationalizing the personal experience one has with God.
I also want to caution you from generalizing the experience you’ve had with Christians to Christianity as a whole. It sounds like you’ve interacted with people who are not accepting, who judge you, etc. There are certainly a lot of people like that out there, but I’d recommend trying to surround yourself with people who love and accept you for “you”. I know that sounds cheesy and cliche, but Jesus talks about this in John 13:34-35 “ A new command I give you: Love one another. As I have loved you, so you must love one another. By this everyone will know that you are my disciples, if you love one another.”
I’m not trying to imply the people you’ve been interacting with aren’t “real” Christians (I think that sort of accusation is unhelpful), but one of the true marks of a Christian in my book is how people treat one another. To me, there should be a level of humility and kindness.
James 1:26 says “If anyone thinks he is religious and does not bridle his tongue but deceives his heart, this person’s religion is worthless.”
One book I’d recommend reading is Gregory Boyle’s Tattoos on the Heart. I had to read it for a seminar at a secular university and it challenged the way I thought about Christianity at the time. It’s written by a Jesuit priest.