I think I've softlocked the game's progress.
Mangle's yellow quest (footjob) simply won't advance;
I can't unlock any of Golden Freddina's quests (if there are any), so I can only talk to her and get closer;
Foxy's maintenance quest also won't advance, no matter how many times I enter her cove to do maintenance;
I read in a comment here that to unlock puppet_facesitting, I would have to help her with something serious first, but she simply doesn't come to the office to ask for help;
and I can't find how to unlock Lolbit;