Your dreams of making it in AI sound far fetched to me. I would look for a more solid career path such as within a trade. Learn basic plumbing or electrical work. You might be able to find someplace to work as an apprentice as you learn too.
Lots of people live in vehicles quite intentionally. It's harder and very often not ideal, but I don't think it's your biggest issue here.
They'll not only provide you with a regular income (no need to find your own clients), but will likely provide you with a work computer and an office space too.
A laptop will vastly expand the number of places you can work from.