Thanks for your post. I understand this is a bit of a change, and perhaps a challenging change, for you to post here. I also tend to just deal with things in my own bubble and I understand it can feel a lot safer and more secure, but it can be hard to just deal with everything that way.
From your post, it sounds like you are struggling to deal with your relationship and living situations, but you have found a hobby in painting that helps a little bit. I'm glad you have been able to find something, as it sounds like the hardships you are struggling with are really hard to manage. It's also good to see you post here, and I help that sharing that bit of your story with us can help in some way.
If you'd like to talk a bit more, it would be nice to hear if you've tried any hobby groups where you can just do your own hobby on your own, but around other people. In my own experience, I went to a writing group where a lot of us just sat down in a pub and wrote our own things, then some people stayed and talked while others just left. It was actually a really nice way to feel like a part of something, without having the pressure of talking.
I hope you have a nice week as well!