How does housing work?

I've reached that point where I'm feeling like I want/need my own place.

I get really bad anxiety and I've worked out that my house and family are the trigger. There's a lot of rows and fights, it's a toxic environment at times between my parents and I also spend a great deal of my time worrying about their health. It's negatively impacting my mood and my anxiety is high all the time.

But I don't/can't work. So I'm not really sure how housing would work. I do claim ESA but I think that's it so I don't see how I'll survive on my own.

I'm not sure what to do about this or how to go about it. I really want to be independent and get away from all this stress but I don't think I had afford it.

A part of me wants to get a job... But I've tried three times and I get in such a state that I normally can't even get through the interview.

Please help.