It’s still new.
In fairness, all Fairphone 2s, too, were delivered with a standard Android including all the Google stuff. It was up to the user to install other OSes and …
So I would say let’s see where we stand in the middle of 2020 regarding OS options or at least a roadmap for them.
I can understand the impatience, but let’s just be realistic.
As for living with what we have, the community has started to collect some possibilities of limiting Google on the Fairphone 3.
A Wiki about that was started here …
How to live without Google on an FP3
A topic about replacing Google stuff is here …
Google Apps keep reinstalling/ reactivating
And further in-depth discussion about privacy aspects is here …
Telemetry, Spyware, list of privacy threats on FP3 Android 9