Layoff/Career PTSD lost me a job

I’m currently working at FAANG but I hate it.

I was part of a 2024 round of layoffs. Another org within the company wanted me but instead of offering me an internal transfer, they made me boomerang and downlevel. It was a $20k paycut and I lost +400 RSUs (~$96,000) that were supposed to vest this year.

Now, the new org is telling me I’m under performing because I’m not working at my previous level. My new boss is from a different culture and is really abusive and has completely unreasonable demands. They’re saying I'm not bringing my "authentic self" to work and that they expect me to work at my previous level. I only accepted the down level because I thought it would mean less work and less responsibility, but I’m still expected to perform at a higher level, but for less money. I'm expecting to be PIPed over it.

I’ve been applying for other roles outside the company and made it through some interview rounds. I even got a trial contract at another company, but I’ve heard that the company isn’t great and the pay would have been about half of what I was making. Still, it would have been remote and would’ve allowed me to get away from this company. Unfortunately, my anxiety and panic attacks from my new boss’s abuse became so severe during the trial that I couldn’t complete it, and I lost that opportunity.

I’m really struggling right now. I've hit ego depletion, and I’m dealing with so much anxiety that I’m don't know how to fix it. How do I heal my anxiety and PTSD when the job that’s causing it is also the only thing providing me with income and health insurance?

Any advice on how to manage this, other subs to ask, or even just find a way to heal would be greatly appreciated. Thank you.