Here's Kiplinger's top ten towns for cheapskates, though I'm not sure how useful this is for you (I'm on disability and living in one of those towns. I believe Saint Louis was one of them as well, and I think we have some LWers from thereabouts.).
If transportation is an issue, though, you might try finding a way to optimize for a bigger city where public transit is actually a thing. It depends on your abilities and the amount of your fixed income.
About $1000 a month. Not sure what you mean by abilities.
This is a thread where people can ask questions that they would ordinarily feel embarrassed for not knowing the answer to. The previous "stupid" questions thread is at almost 500 questions in about a month, so I think it's time for a new one.
Also, I have a new "stupid" question.