

Apply and see. Worst case is you learn something.
My interviews for linux-related roles were basically, “how do you change directories? What does ls do? How do you edit a file?” (Last one was trickily open-ended to also see what my preferred editor is). I’m not even sure they asked where log files are typically stored.
As for what to put on a resume, just say that you run a home lab or something.
I have not tried Matrix yet but I hear it’s a good replacement, fashioned more to the likes of Discord but I think it has everything you’re looking for