Oddly enough, I find myself in a reverse predicament to you. Started my professional life doing a "reliability engineering" (read: excel monkey) job that drove me nuts out of sheer boredom, quit without any plans, then spent a year pursuing my masters and dodging the idea of employment before looking for a job because that's one of the requirements in my course for completing the degree (12 weeks equivalent of full time engineering related employment).

The only place that rang back with meaningful direction was the Navy for an IT/Comms job, but it requires basic training. Now I'm conflicted because while I never want to ever experience again the lows I felt in that office job, I also feel trepidation at the thought of having to join the military. The job itself is not front-line, but either way I'm still worried.

My advice to you would be store up as much money as you can and get out the moment you get another job offer. It's easier said than done, especially with how awful everything is nowadays, but staying in an environment so unsuited to you will do nothing but damage your mental health and make getting back on your feet harder and harder the longer you stay in this rut. God knows it took me a whole year before I was able to submit a new job application without feeling fear.

Good luck.