hit rock bottom..wtf do i do

in the past 6 months I’ve gone through a break up with my first love who i thought i was gonna spend forever with, been betrayed and hurt by my closest friends, had to let go of people I loved genuinely, struggling with burying years worth of heavy trauma and PTSD, lost a lot of weight due to depression and side effects of meds i take, and most recently have made the biggest mistake of my life that i don’t think i can live with. (my current nightmare) and I am coming to terms with the fact that I am an alcoholic. I am only 22, but I feel like my life is over. I wish I could start over. I don’t know who I am anymore or why I deserve to stay. I take meds and go to therapy, but I don’t know how else to cope besides isolating. Just yesterday I thought I had a grip on my life and felt a glimmer of hope for myself, just for it to come crashing down again. Please let me know how you have survived rock bottom.