There is no religious aspect of AA... but there certainly is a spiritual aspect.
The last 3 lines of AA's "How It Works" sums it up quite simply.
(a) That we were alcoholic and could not manage our own lives.
(b) That probably no human power could have relieved our alcoholism.
(c) That God could and would if He were sought.
And it is God "As we understood Him". A Higher Power. Yes, alcohol was a Higher Power. It was going to kill me and I was helpless.
I spent about 15 yrs in AA trying to prove that I didn't really need a Higher Power, I just needed to quit drinking. It was very painful.
Today I embrace the thought that I'm hot the center of the universe.
All the best.
Bob R