I'd become a craftsperson that's for sure, whatever I end up doing will probably be creative manual labor of some kind - pottery for example, but not limited to. It depends on the situation wherever I'm at in the hypothetical moment.

Also, as a side hustle I'd be running something like a DnD table. I'd be on a personal quest to reconstruct the rules, I'll be pretty much asking everyone I meet if they played, what they remember and if they'd be interested in joining my group. I believe with no Internet, tv, or radio, ttrpg would become extremely popular.