> App > Settings > Phone Number -> remove
> App > Settings > Location > Location History -> Off
> App > Settings > Location > Location Services -> Off
> App > Settings > Privacy > Face Recognition -> No
> App > Settings > Privacy > Privacy Settings > Who can see your friends list? -> Only Me or Custom
> App > Settings > Ads > Ads Preferences > Ad Settings > > Ads based on data from partners -> Not Allowed
> App > Settings > Ads > Ads Preferences > Ad Settings > Ads based on your activity on Facebook Company Products that you see elsewhere -> Not Allowed
> App > Settings > Ads > Ads Preferences > Ad Settings > Ads that include your social actions -> No One
While these changes won't guarantee your privacy when using Facebook, they might give you some peace of mind.