Aside from some of the other things people have already mentioned, going to or volunteering for various festivals and conventions can be a great way to meet random people and get out of the house. If you’re volunteering you’re more likely to end up meeting more local-ish people (like from whatever nearest Metro area the event is occurring in since you said you’re super rural).
Even if you don’t meet any cool new friends you want to stay in touch with, they can be a ton of fun and are a great reason to get out of the house. I’ve ended up having some really amazing experiences that I absolutely never thought possible just because I got out and went to Conventions (mostly anime or game conventions for me, but there are all kinds).