You can enable Play Services and install them and use them, but why bother using a DeGoogled phone at that point?
I use the OsmAnd~ (OpenStreetMap Android) navigation app, which navigates great, but it doesn't look up addresses very well.
To look up addresses on Graphene I use an app called GMaps WV, which sandboxes the browser version of Google Maps, from which I can send the coordinates to OsmAnd~.
That keeps Google from tracking my every move through the Google's Nav App.
