There is some debate on MicroG (Calyx) v Sandboxed GPS (GrapheneOS)
I don’t think it matters if you are going to use Aurora on Calyx or sandboxed GPS on Grapehne, you are connecting and sharing data with google. For most normie apps, this is what it is. You are still tethered to sundar the creep.
If you actually trying and willing to suffer for it, then GrapheneOS without Sandboxed GPS is the best for privacy while using Fdroid and Aurora (NO sandboxed GPS).
People with better info, please correct me since I am regarded.
Check permissions on your phone that should give some idea and read the tos. You likely won’t like it tbh but that’s standard with anything not foss