I HATE MY JOB, WHAT DO I DO?

Hello, all, I'm hoping you guys can offer me some advice. I used to have a lovely work from home job managing an engineering team. However, since then, mist of my department has left & been replaced. We got a new temporary supervisor, and she is AWFUL. She assigned me, the newest member of our team, a second team to manage and gave us an impossible deadline to complete. This other team is also managing multiple projects, so I now have 5 projects in managing, when I started off this year with one. My head feels like its going to explode. She is zero help and she choses to use our 1-1s to grill me on whats not complete. She is very inconsistent and fluctuates between telling me one thing one day and then telling me something completely different another day. We recently got a new supervisor who's starting, but I'm afraid I'll have to deal with her still as per our new company directive, we will be partnering up with her department to get things done. Which I also dont like, because it sounds like they want me to be some kind of helper to that team lead, when I've always worked independently. This job's one saving grace is they dont check my location, so I can work anywhere in the world. Do you guys have any advice? Should I try and quit and find a new job? I am stressed all the time and I could try and find a job in the country that I'm in but it probably wont pay as much as this one. When do I pull the trigger? And if I stay, how do I manage these expectations?