I am not into the monotheistic religions either. I prefer dipping my toe into Buddhism and doing the occasional Witchy chant.
I do think that there is an important place for a higher power in many athiests lives. And I get that some of you won't go there.
I've been reading studies on neuroplasticity and brain health. Some of those studies are showing a marked improvement in brain health (As measured by heat and energy output - I know, highly imperfect still.) When people pray and create rituals around a HP. Here's the thing - It really doesn't matter what that higher power is. One school had students pray to their university's first president. They achieved the same benefits as people who prayed to god.
What works for me is to take some object that isn't associated with anything I find distasteful, and to focus my "religious" step 2, 3, + 11 work on that. For example the tree outside my window.
I don't focus on the fellowship as my HP, because we are crazy. Its a whole group of drunks! How are we going to solved anything?

There is **** going on in these groups that my HP is not cool with. For me, the fellowship is for community and outreach. My HP is all my own.