Marijuana is clearly a mind altering drug, which is or has been a problem for many members here. So I’m not going to sit on a sobriety site and advocate for it. As per the rules -
Saying that, it is up to all of us as individuals to decide whether substances/ behaviours etc are a problem for us. As others have said, no one else can know that apart from you.
From my experience, working through mental health problems is hard. It is so individual and a big messy mix of our experience and brain chemistry that I don’t pretend to understand! But depression really fucking sucks and I can relate to the feeling of wanting it to stop.
I also think the line between antidepressants and other forms of self medicating can be blurry, I have considered micro dosing etc. It led me to ask some serious questions about my motivations and whether I could truly do that in a way that wouldn’t undermine my sobriety. I never really came to a conclusion on that. I have been fortunate to find an antidepressant that, for now at least, takes the edge off. I don’t feel remotely guilty about taking them.
Not sure that is particularly helpful, but you asked for opinions and there is mine 
