It's so difficult OP isn't it? This alcohol thing.
After a couple of years not drinking I'm back to drinking a bottle of wine a week. It sounds so civilised. But it's a total struggle to keep it to one bottle a week. And alcohol occupies a lot of my waking thoughts again. Wheras when I was TT I n got to the point of rarely thinking about it.
You are not a waste of oxygen. You are struggling like so many other people. You will find your strength to get to a better place.