Hi and welcome to posting someo
I have no experience with 12 step groups, but others will.
I think a lot of us turned to alcohol to deal with a whole lot of things be it abuse of some kind, or self medication for anxiety depression or other mental illness, or PTSD...or any one of a myriad of traumas and reasons.
I think it's great you understand that now - but for me I also think it's important to deal with addiction, as well as the underlying stuff.
I have to deal with the underlying stuff - and the alcoholism.
Whatever way you want to do that is up to you, but I know you'll find support here
D