Privacy settings checklists
Pick a service and work down its list: what to change, where to find it, and why it matters. Do the first group and you have most of the benefit.
Nothing you tick is sent to us. By default nothing is saved either. If you choose to remember your progress, it is kept only in this browser on this device, and you can erase it with the same box. This page tells your browser to block every network request.
Apps rename and move their settings often, so treat the wording as a guide and use each app's own settings search for the name shown. Settings reduce what is collected and shared; they are best available precautions, not guarantees.