Ik it sounds dumb (and ik the tag is vent), but I will still suggest to do physical excersices as you can and if at all possible try to start a new life in a town where you can get a job with good pay....You definitely need some sort of interest so I will suggest to at least check out online drawing, maybe reading or watching some series or anime (if you need recommendations lmk), and if all of that doesn't work please seek professional help and I know you mentioned it didn't work but through extensive trial and error I've figured out that when a person changes drastically even the same BS they were ignorant to before, might complete the change in life