Update:
1) Google collects your location with Android, even if you disabled it in the system settings;
2) Facebook (and Google) access to your contacts and use it to make networks;
3) you may give granular permissions to Facebook and Google by rooting your phone and installing a ROM such as Lineage OS or Replicant; and
4) in my country, France, the law allows me to ask them to delete anything I want.