That's a bit of a conundrum isn't it? Need alcohol to have a social life, have alcohol and it is destroying your social life. Follow that to its logical conclusion and soon there will be alcohol but no social life.
I was 22 when I reached that point. I recall bein thanked for not drinking at one occasion, and a couple of other times being thanked for not turning up. I had got to a point where the only invitations I got were invitations to leave.
So thinking it through a bit, perhaps what is needed is the ability to socialise without alcohol. I think of it as rejoining the human race. As Dee suggests, it might be a little different, maybe quieter, but it can be done. Millions of us have done it, and discovered that alcohol is not necessary to socialise.