I hoped Mobian or PostmarketOS would work well enough, but I can’t seem to get receiving texts or calls to work

Yeah, smartphones are pretty hopeless. I’m trying to adapt to only using Libreboot computers with a libre operating system. I thankfully don’t need a cellphone for many things, but I know other people really need them. Sad to see that we basically can’t have any real user-freedom on one of the greatest inventions ever made…