Mental illnesses

TW MENTIONS OF POOR MENTAL HEALTH 

does anyone know how to ACTUALLY feel better, i've been in wards ( closed and open ), im in therapy, been to group therapy aswell and i even have my diagnosing process semi-straight, like for context im severely depressed ( MDD ), i have autism, ADD and social anxiety and i lowk sound like those disorder collectors on 2020 tiktok but like I DONT WANT THEM, TRUST ME.. but like my question is how am i supposed to cope with that, my coping mechanism are HORRIBLE at this moment but i've been doing most of them for years on end now, i've also lived through some traumas which still affect me but im not really able to talk about them out loud.. it's like my words get stuck in my throat! so like i'm more asking for healthy coping mechanisms/skills to avoid unhealthy ones like drug abuse/sh/si/attempts and so on..