I am very sorry you were bullied in childhood, especially by family members who should have known better, and who should have looked for and found ways to help you even if they did not fully understand you.
Now, your workplace does sound like a toxic workplace. It sounds like they were either trying to make a case, in fact overprove a case to fire you, including using all kinds of twisty-turny logic and expending energy not to listen to you, or it was some royal jerk was trying to push you to quit when he or she didn't really have they authority to fire you but was sure acting like they did. Either one is a bad situation. And a negative situation which can grind you down, which can grind anyone down.
Okay, one skill I learned, and I take this from the American sport of baseball, is how good my B game is? And to try and have a steady eddie B game. Meaning, I may not always be at my best or have my best energy, but I can still do okay work. In fact, it kind of calls on the other person to contribute and do okay work and may be better socially. Now, it doesn't work all the time, maybe only two-thirds, but I will take this as one more skill I can add to my existing skill set.
And working here together at WrongPlanet we can all help each other add skills. And if most jobs are merely mediocre, and they are, we can also find meaning through such things as volunteer work.
And your current job sounds sounds bad, not merely mediocre. It's just a question of how to leave and when to leave. And please do not feel you are trapped, that's a very negative feeling. That's kind of why I was giving my advice of 'family situation I have to take care of.' That way you can take any day off entirely at your own choosing. Now, it is risky, but it does put some power back into your hands. Now, it is a lie (or a fib), but I think it's a deflecting lie of self-defense and ethically okay for that reason. And certainly after the way they treated you, I think it's fine. Other people here may disagree, and that's okay. What I'd really ask other people to do is come up with additional suggestions for handling a very difficult situation.