It's possible that retail isn't good fit for you since you seem to have difficulty with every job. I wonder if vocational services of sorts might be helpful. Working with a professional figuring out what career path is suitable for you and also working with a professional on improving your interpersonal skills might really help you. Talk to a therapist why things aren't working out for you?

Have you ever took a career test. It's very likely that retail wouldn't show up as the best option for you.

You also need to understand that retail is profit driven and if employees cannot keep up managers will not deal with it. Also the fact that people come and go, that what happens in retail. It's low pay no skills types of jobs. People don't last in those jobs. Unless you are going to go for management positions, you'll see that people don't stick around.

After my district took pay cut I took extra job few nights a week in a big retail chain. It allows me to supplement my income with $500 a month doing something mindless. Everyone there has a day full time job and needs a part time supplement or is in school. The only permanent full time people are the ones who have plans to be managers. It's very fast pace and who cannot keep up leave. Some people leave because they have other stuff going on. It is not a job to fuss over. You do it well, get your paycheck and go home or you leave.

Have you seen the therapist. You said you found free place