I ( 33) feel desperate to quit and need advice

I’m having a mild emotional imbalance at the moment. I’m fed up of my manager. She’s fake and I’m too mentally drained to try and play her at her own game.

1. She told me I could get a promotion when I was planning to move schools. She did this before speaking to the upper management and they said no so nothin was ever said again.
2. She absolutely hates our co worker bc she does nothing. But she pretends to be her best friend but comes to me to complain after each meeting.
3. She messages the group chat and again acts like the co workers best friend
4. She was bitter that I got positive feedback and gave me negative feedback a day later for no apparent reason. Sent me a written form of feedback which was very passive aggressive
5. She’s planning to recruit. We’re about to teach a new unit. I’ve planned it along with the intro sessions, read the texts cover to cover and made detailed plans and now. because there’s a new recruit, she wants to use his experience that’s in a completely different author that I’ve not read. Which I understand, but it’s unfair imo
6. I’m pretty much doing her job.
7. I feel like I may sound unreasonable, but I’m very much fed up

Tldr: desperate to leave job. Need advice