Nobody is doomed to fail in sobriety,because of not attending AA.
You are responsible for your own recovery.I attend AA and have done so for the past 12years,several people who got sober at the same time as me ,stopped attending meetings,I am still in contact with them,they are all still sober and happily so.
The importnt thing is to change,this can be done in or out of the rooms of AA.
I wish you well.