[Solved] How can i host my own lemmy instance just for myself on a single raspberry pi 3b+?

They have an ansible script in the docs to set up your own instance. It won't work 100% with debian 12 but you can get around it by reading the docs for the commands that fail. I have no idea how ansible works but it's pretty easy to follow the instructions.

You do have to get a domain first though so pick something your gonna like because you can't change it later.