First I want to validate that the situation you're in is really tough. It sounds like you've done a lot of thinking on this, and have thoroughly explored the options available to you. I'm sure you've considered the things I'm going to suggest, but since you didn't explicitly mention them, I'll go ahead and put them here.
I would maybe try checking in your village to make absolutely sure that there aren't any options there. It's a daunting task, for sure. As someone with mental health issues, I often have a lot of anxiety around reaching out, asking for help, and dealing with rejection. The times I've had the most success with job hunting are the times when I've been able to face those challenges. If you're working with a professional on your mental health, they may be able to work with you on this.
My other suggestion would be to explore online work. Coursera has a free course on Contact Tracing for COVID through Johns Hopkins. It takes around five hours of online study to complete. There are some other opportunities out there, but a lot of them are going to involve talking on the phone. If that sounds like an option for you, you can look into teaching English online, or something similar.
Talk to everyone you can about possible employment opportunities: friends, relatives, people in your community. You may need to take something that isn't a career job in order to get yourself into a different situation financially. If you come across an opportunity, start with "How can I make this work?" rather than "Here are all the reasons why this won't work". I've had some really rough gigs in the past (I used to walk 2 miles to my coffeeshop job in a Minnesota winter, and I had a gig at a grocery store even after I got my degree). If you do end up in a position like that, have an exit strategy planned out. Figure out what you'd like to do (learn to drive, take online courses, move somewhere else) and figure out how much you need to save to make that happen.