You seem to realize that this relapse doesn’t erase the progress of the last eight years. That’s such an important perspective. You’ve also seen how empty and joyless forced moderation is for an alcoholic (especially successful moderation). I’m the same way. It’s not that I can’t occasionally moderate with enough willpower, it’s just not worth it.
And lastly, most importantly, you’ve realized you are unhappy. Beyond AA, consider some general therapy to address what could be depression.
Hang in there and glad you are here!