If you've ever worked for a genuinely toxic and vidnictive boss, you probably know how this goes... You try to push back and things get much worse... Somehow you're always the one who ends up paying for it. You might be 100 pct right about the situation but being right doesn't mean much when the boss has all the power. And don't count on HR or upper management stepping in. They probably know that boss is sh-t but they don't care enough to do fix the problem.
At some point you have to ACCEPT that the boss isn't going anywhere, so you need to. Obviously that's easier said than done, especially in this job market. Maybe you can't afford to leave right now. Maybe you need to pick up a few skills first. Fine. Give yourself a year, even 2 if that's what it takes... Gotta have a plan. Focus on relationships with people who care bout u and spend whatever free time you can manage working toward something better.
OK, sometimes it's just a bad fit or a communication problem. Give it a few months, have an honest conversation, and see if anything improves. But if you've been dealing with the same nonsense for 6 mo and nothing has changed, what makes you think another 6 months will be different?
The worst thing you can do is complain about your boss for 3 years while doing absolutely nothing to change your situation. I've seen that happen too... People get comfortable being miserable, not good... Build up some savings and keep in touch with people you've worked with. You never know when you'll need another job, and having some $$$ in the bank and a few people you can call makes a difference. Especially when the day comes that you've finally had enough... Like me...