Welcome Jasmine (my favourite flower scent!),
Yes, as others note, you'll find heaps out there for atheists wanting to get and stay sober. The Secular Connections part of SR is terrific, with lots of sane and intelligent conversations.
I was also interested to see (via my obsessive online research :-)) that some intrepid adventurers have even established an explicitly atheist / agnostics AA. Can't remember its exact title now but just google it and you'll find them. I think they're physically based in the US, and have online stuff too. Probably some of the atheist members here can offer you more info.