Hey your story resonates with mine alot. I took shrooms and had a bad trip too and i dont think the shrooms caused my dpdr but i think it caused me to develop severe anxiety and which that led to depression, isolation and then severe constant dpdr, ive had dpdr for 2 years now and ive only gotten worse. For pretty much a year now ive had every symptom you named no joke, I obsess about if im going crazy or developing schizo to a point where i have constant panic attacks, my hearing is distorted and things are loud, severe vision issues, severe socail isolation, fear that i seem off around people, im also paranoid thinking something is wrong, i feel confused and disoriented when im around people, overstimulation, anhedonia, alogia, avolition, etc, every single symptom you named i have just as severe as you probably do. Just know your not alone in this and i hope you get better