I spent quite a bit of my late adolescence consuming mind-altering substances like LSD and mushrooms. It did expand my mind and made me appreciate certain things.
But it did not fix my depression or make me feel less alone. I might feel connected to the universe -- for a time. But it eventually fades, and the old demons come back.
Sooner or later, you need to deal with the issues at hand. The reason you feel this way.
For me, going to therapy allowed me to address some of the root issues -- generational trauma, a lack of affection, perhaps chemicals in my brain -- and allowed me to start rewriting my story of myself.
I enjoyed my experiments with psychedelics, and I would not discourage anyone from using them. But they are not the cure-all many claim, either.