I'm just exhausted

My current work environment is very toxic. My managers manager blocked them from escalation to HR recently. That manager used to be my coworker and we got along great but they went on a full blown power trip. I disagreed with them on something and they started coming for me. The one ally I had completely pulled away from me, which makes sense. Alignment with me could potentially make you think your job is in jeopardy too. This is hard on me and makes me want to walk out because I'm a pretty social person and my manager knows this. I've been applying since December, and had places waste both of our time, been a finalist but then rejected, and so many initial phone screenings I have lost count. I'm doing my best to stay positive and think I'm almost out, but all of this rejection is making me feel extremely depressed.