Does it make sense to think about money if you cannot have more income? Follow the steps of Robinson Crusoe, he has lived without money for years.

Raise chickens, grow your food, as you get tired of chickens, you can start selling them. The only way you have to live off $500, is if you are not doing anything.

I don't see this working out. Double check your priors, I bet you are missing something.

Flagged, OP's story does not make sense or even match up with their Bio

What are the climate and population density like where you live?