Welcome, so sorry for all that you are going through. Please take a little time to think about yourself, are you eating ok, getting enough sleep, if you cannot lift weights than walk, run , bike or yoga but keep exercising.
Can you find a roomate or 2 or 3 and share a place, are you willing to pack up and move?
I am 49, my mom has been an alocholic most of my life, NOTHING I have attempted to do has had any impact on her drinking, the only person you can control is you.
Try another psychologist or therapist, try different medicines for depression, it does not always go smoothly, but you only lose when you stop trying.
Please take care,