Those feelings of not feeling good enough are a real bitch. I'm sorry others make you feel that way and that your brain/self-talk reinforces it. :(
Alcohol was my self-medication companion for quite a while. But it wasn't a very kind or healthy one, at all, albeit damn convenient, legal, and affordable compared to many of my other choices. I drank a shit load of hard liquor in my teens and 20s, shifted to shitloads of beer, mead, and wine in my 30s (along with Bailey's in my coffee and hot chocolate), strictly casual beers in my early 40s, then finally gave it all up, among many other things, at the age of 46ish thanks to a medical emergency.
We all reach our limits, eventually, it seems, and in our own time and way. I tend to have to be catapulted towards helpful change via dire circumstances, unfortunately. May you find a kinder gentler way to somehow love/nurture yourself through whatever it is you keep trying to drown out.
When I finally decided to give it up, kombucha fermented tea was a life saver for my cravings in replacing the beer....ginger flavored was my favorite, on tap...as it had the fizz and borderline nasty-ish taste that reminded me a lot of alcohol. It helped me wean off both alcohol and sodas, and I never thought either would happen in my lifetime as I thoroughly enjoyed them both for decades.