I promise I'm not stupid, but uhhhh, when I click on my name, it brings me to a page that looks like a community with an overview of everything I've posted, but there's not an option to select a language.
That said, I was also spooked off by the "You won't see most content" thing, which led me to believe that a lot of communities aren't language tagged properly(?)
It turns out old.lemmy.world doesn't have it lmao.
I hate the newer style look so uh, yeah.