Also if you have a talent at different sculpting methods like digital, there is a lot of cash to be made selling miniatures for board games.
Companies like CMON make tons of cash on Kickstarter.
However I can only echo some of the sentiments here, even if you get something part time, to supplement your true passion, it’ll be better.
Want to say additionally that I’m sorry you’re having a rough time. I hope things start to look up soon. Remember it’s never too late to ask people for help. There’s lots of free support groups for people suffering with mental conditions - they might help you feel less alone.