A lot in the game is based on the SCP Foundation, which is basically supernatural stories written from the view of the foundation (with plenty of redacted material). There's tons of stories, see here: https://scp-wiki.wikidot.com/
Control very much feels like a bunch of SCPs thrown into a game, but with only half of the story behind each one. Just giving you glimpses unfortunately.
The solution has been the same for the last 20 years: Use a password manager, do not reuse passwords. That's it, you're done.
Even if the Lemmy instance admin steals your password (which would be easy!) they can't do anything with it.