Moderate self medication, is it necessarily bad? 

My counselor sent me to a rehab center and I have been more or less abstaining from alcohol and opioids since 9th of august. Meanwhile my SZ has gotten worse, mostly negative symptoms / depression, and i have seen a lot with this diagnosis who went completely sober and drug free and since then lived a isolated, depressed way of life, and i wonder whether i'm better off with a moderate self medication to cope especially with the negative symptoms.

(i have also heard the opposite, of course, people with SZ who actually improved when quitting)

Any thoughts? Both from those who benefitted from quitting alcohol and those who are in doubt?

(i have tried all antidepressants and a lot of antipsychotics and now i'm on cariprazine and mirtazapine and they does not work)Any thoughts?