I haven't posted on here in 5 years but-
I struggle with depression and severe social anxiety. Lately I've succumb to isolating myself because I feel as though there's no one I can trust. I've always tried to give my all for other's but lately I've started to notice that I've fallen into a routine of being back stabbed and stepped on by those around me.

In all honesty I'm not sure if I've ever experienced a healthy platonic or romantic relationship with those around me and I'm starting to feel like I might be the issue.

I'd go to therapy for the way I'm feeling considering there's a lot of other things on my mind but with the state of the world, jobs are scarce and I just don't have the money, nor did I before everything happened.

Lately I've also found it difficult to study and pursue my dreams as well as my hobbies but I guess I'll leave that for another time.

Any theories or ideas? I can take a hit so don't be shy.

Hey, maybe you're being a little bit paranoid.
It could be related to your social anxiety struggle. You don't feel very comfortable with a lot of people and sometimes, humans can be very cruel even with those that tried to be nice with them. But don't isolate yourself, coronavirus has already done that. I know that it can be frustrating and you just want to give up on humans but you're out of luck these times, just that. But not everyone is like that, really. The depression doesn't help either since it just gives you that will to stay alone. But hang on a little bit, you don't need to take such measures. Life can be hard but you can do it, just hang on.
Oh yeah, about your studies and pursuing dreams struggle, it's definitely that anxiety and discouragement that you're leading with right now. Everything is related, once you overcome that biggest trust problem, I think that you'll have confidence again and moving on with your life.