@Takingbackmylife oh that's a grim feeling, not so good!
I've suffered from social anxiety my whole life and have used booze to 'help' with that.
I think it's not just a case of 'don't drink' - if the drinking has been your way to cope with social anxiety - you still need some other way to help you feel more at ease in social situations.
A thing that really helps me with social situations, is to focus on having a conversation with just one person. I find that I can chat quite happily to one person and feel quite relaxed.
When it's like an open/round table and everybody is chatting and people are cross-talking and butting in and so on, that can be really challenging. For those ones I can just observe the chat, and try not to feel like I need to join in or contribute. If someone near me wants to start a little 1-1 or small group side chat, ok great, back to plan A.
Another thing I do, when I need to and can do, is just to go off for a social break. Go to the shop to get something (and take my time), go 'get some fresh air' or just flat out find a quiet spot and poke phone or read a book for ten or twenty minutes.
Also - a lot of social situations are a bit more optional than you might think. Or you can join late or leave early to manage the time that you have to interact. Maybe doing the start, when the numbers are smaller, the volume tends to be lower (and people not so drunk yet) and establish a presence, then leave early. Nobody will care, they will remember you being there.
I hope any of that might help, I expect a lot of us have our own little social tactics that help, maybe sharing them can help others?