Your handle says it all.
From the limited information given, it certainly sounds like they're circling the wagons, and are already in the process of managing you out. Or are hoping that you'll get the hint, and will spare them the trouble.
Or perhaps not. It's hard to tell without more specifics (such as the content of the greasy jokes), and more background context. Which you can't reveal here, for obvious reasons.
So the best thing you can do for yourself is grab a friend (who knows you well enough to catch and criticise you when you're doing something wrong), and ask them to do you a favor, which is to go out for a bit of food and/or drink, and listen to you go over the play-by-play of the various unpleasantness you've experienced, and as much of the background context as you can.
Tell them you appreciate their judgement and you'd really like to know if it was something you did which triggered these reactions, or if it's all from them, or both. In the "Am I the asshole?"† sense.
Even if you what you may have said/done to trigger their reactions may seem fairly trifling, and even if their reactions were ultimately unfair, it would still benefit you to know what the basic chain of causality was.
Also: most likely your performance isn't quite "fine". Or it may seem objectively fine, but still, your manner or dealings with these people may be slightly off somehow. This is something you can ask your manager about directly (in person if at all possible), without revealing your broader concerns. They may well give you vague/wishy-washy answer, but at least that will tell you something.
What do from there? That I wouldn't know. But at the very least, you can benefit from the reflections and feedback you get from what a (reasonably) close friend might tell you.
And then from there -- listen to your gut. In general, in this life, when we get to the point of asking ourselves "Should I stay or should I go?" then that basically means it's probably time to go. It's just a question of timing, and making sure finances are in order (which in the current job market basically means having another job lined up already).
One last thing: Don't worry about the camera toggling, and what it supposedly means. It's really easy to misconstrue this stuff, and it may have been entirely random. Either way, it should carry much less weight than the overtly negative verbal stuff you've been hearing. That kind of stuff is definitely worth running by a friend, if you are fortunately to have one available near where you live.
Best of luck. It's a supremely shitty industry in many ways, and it's just what these people do.
† https://www.reddit.com/r/AmItheAsshole