Hi Garrett! This is going to be the beginning of your new life, I'm excited for you. I agree with everyone else....fade. I faded successfully and my family came along, it's been a huge blessing. The journey was super scary and depressing. I don't know how I made it! But you are 21, which is so great. This experience will one day be just a small part of your life. First of all, try to make some new non witness friends. It can be awkward at first, and you may want to talk about this HUgE thing you are going through the whole time, and you will seem a little weird to them! These days worldly people are trying to be accepting of different people, and they'll be all, oh, you were a witness, that's nice, NO it isn't nice, it was awful!! They won't get it. But try to make friends with people who enjoy doing the same things you do.
Personally I found another Christian faith and it's been wonderful and a new community for me, so keep that option open for you unless you are feeling atheist, like many people here. Don't have the 'but what else is there, where would I go?' Attitude...that's what they want you to believe. If you go this direction, choose one that works with your own beliefs and liberalism or conservatism...there's lots of options. From the way you talk, I think you're more liberal. United church of Christ, Congregationalists, Presbyterians, then Methodists or Lutherans are a good place for you I think. But first of all do research, lots and lots of research, not only on the org history, but on Bible beliefs. Before I did this research, I didn't think I would ever be in another religion, but the research brought me to it.
There are many here who debunk the bible and God, and that's where they arrived on their own journeys. Everyone is different tho, and you need to follow your own instincts...it might be that direction, it might be another. I just know that having faith has helped me a lot and I would recommend studying if you can.
See a doctor about the depression, it sounds severe. But also know that probably most of us went through depression when we learned ttatt. It's a form of grieving and huge uncertainty and just, mess. So it's really hopeful down the line for you that this won't be a permanent affliction.
much love!