To be blunt, it sounds like you’ve been tossed into a blender, and I can’t think of anyone in my life who could have gone through all of what you just described and not feel exhausted so please keep that in mind. It sounds like a lot.
I don’t have any advice to give except, if you are able, find and speak to a professional therapist. I thought I was above that sort of thing until my own mental health got so bad it was basically one of my only options.
One thing I wish someone had told me in my mental health journey - If you don’t connect with the first (or second, or third) therapist you meet with, fire them and look for a new one. You won’t offend the first (or second, or third) therapist because they have the same goal you do, which is to get you into a better place. It took me three tries to make the right connection with someone I spent about six months working with and it has made a big improvement in my well being.
Sending positive vibes!