What you describe, apart from the weight gain, was my normal state when not drinking. It was why the idea of sobriety seemed so unattractive. Sobriety had always been a miserable affair for me.
I discovered that it was because just stopping drinking does not treat alcoholism. As long as I tried to live with untreated alcoholism, it just got worse until I returned to my old soltuion, alcohol. It was only with the aid of a few drinks that I could feel half ok, but that relief turned out to be temporary.
Maybe you have a condition that medication will fix. That wasn't the case for me. The answer could not be found in a different type of bottle. I needed to treat my alcoholism.