EDIT: nevermind, it just fixed itself for some reason.
My worlds disappered from the "host game" menu. I found the cluster files, they seem to be alright. I tried removing them from the folder and pasting them back in, restarted the game multiple times, but i still don't see them in game. I read through https://support.klei.com/hc/en-us/articles/360060509731-Missing-Servers-Server-Suddenly-Disappeared, but it seems like none of these things is the reason of my problem.
I don't know.