I've moved almost all applications to be installed via Obtainium instead of Aurora Store (Google Play) and have removed F-Driod (although many Obtainium apps pull from the repository still). Down from five installer apps to four, it's not much, but it's a step.
Discussion
Check out zap.store
Yup, have that one also, one of the remaining four, lots of potential. 😅
Obtanium is great because it can pull from so many different places.
Okay, down to just two app installers; Obtainium and the built-in GrapheneOS App Store. Now completely without Google Play sourced apps. 🚀