yes, I use GrapheneOS as my daily driver and you can use Google Services if you wish. You can also Sandbox them so that those services only interact with a limited set of other services.
In this, the way you set up your device is entirely in your hands and not that of your phone vendor or Google.
Also, you can get in touch with GrapheneOS here in the Fediverse 👇🏼
GrapheneOS (npub1kwa…e0nj)