My friends on discord always make me question my friendship with them, it is like I can't trust them at all.
Why are you questioning your friendships with them?
I think I should question our level of friendship because they don't make me feel welcome anymore
I'm sorry you're feeling paranoid, and you have all the reason to think why. Things may be a misunderstanding, so you still should hang out with them as usual but you need to ask them if anything is wrong. You don't want to keep getting the wrong idea when there's nothing by just always wondering.
What if they do care and don't know how to tell me that they want me gone.
Well if they do care then you'll only find out if you bring up your issues with the discord itself. They can't make you feel better if you're not letting anyone know how you feel.