Umn Morris is very good for CS as is South Dakota school of mines. Both are relatively cheap and, being an adult you could live in town (cheap rent) and leverage your geeky knowledge +math foe a technical job. You could even try to get hired at a university in the IT department - yes I know CS isn’t IT but you may have some entry level skills if you like xomputers… And many universities will pay for their staff to take a class or two for free Each semester.