Been at job 4 months and hate it

If you have any recruiter/HM friends I would ask them. You’re gonna get little else but BS answers here from folks who don’t know what they’re talking about on this topic.

Why slaving your life away?

Let’s talk about the abusive manager. Are you in a protected class, or do you have a disability? If you have a disability (this can just be the anxiety and depression you are likely experiencing) you can ask for a reasonable accommodation to not work over 8 hours a day. If you have a paper trail, especially with a doctor or therapist, this will stop you working insane hours. If they balk or retaliate, you are setting yourself up for a nice pay day. Screw them OP, stick it to them. If you are leaving, you got nothing to lose anyway. You could be setting yourself up for a nice severance AND unemployment on top of that for just 4 months of their abuse.

Being at job for almost 4 years and I hate it too AMA

If the manager has started documenting your performance deficiencies, you are better off starting a new job search immediately. I would advise that you leave current employer out of your resume. In this day and age, no one cares that much about employment gaps. Just say you have taken some time to decompress from your previous job and started job search recently. If you don’t report it on background check form, it won’t show up either. If you are able to turn the current situation around, all you have to lose is some time and effort spent on the new job search. But in my mind it’s risk mitigation or at least an insurance policy.

Start looking now, best case scenario, it will take several months to secure a new position, possibly more.

OP, can you move to a different team within the company?

4 months on resume once is fine if you can explain it. A pattern would be more of a problem. Life’s short. If you can handle it financially then move on.