If you are being false voted off for no reason, make sure you record in the future when you are alive or the start of the round (when you first get on) and stop recording when you head off. Grab their steamID too and you can ask for assistance in #admin-request (discord), unless you're playing 3 in the morning (which is unlikely that some JB staff are going to be on).
Or you can play a different time. If you think people are going to trash you like that, leave and join later. Try not to leave when there is a vote on you if you are planning to play later because "now" is not a good time.