Been using Fdroid to the point where my first boot into a new phone is:
Open chrome > download fdroid > open settings > uninstall/disable every single application I can > open fdroid > install all the relevant apps I require for making my phone useful
I’m just waiting for a small life upgrade in order to be able to support some app developers; it will be money better spent than using the standard google apps.
You might want to consider your next phone to be a pixel+grapheneOS.
Something worth noting is that F-Droid is both an app to download other apps but they also maintains a repository of apps. You can use alternative store apps (like Droid-ify) with the F-Droid repository OR you could use the F-Droid app with a different repository (like IzzyOnDroid). You can mix and match to meet your needs.
I use the Droid-ify app with the F-Droid, IzzyOnDroid, microG, NewPipe, and Collabora repositories.
Once you start down this rabbit hole, give Obtanium a look.