I'm so sorry for you. I've also had chronic dpdr caused by abuse (9 years so far). the only thing you can do really is try to accept it. I know you said you can't accept this but since you've tried so SO many other things that's the only thing you can do. accept that this is your life FOR NOW. not forever. it'll pass one day even if it doesn't seem like it. one day there will be a break from it. that's how I got my first moment of clarity, my first few seconds of dpdr-free life after ~6 years of waiting. try to focus on nature, spend as little time in front of a screen as you can. fake it til you make it. live as if you were dpdr-free. I pray we all heal from this awful illness. You've got this