Just don’t expect privacy.
If you use the Internet, a cell phone, or any connected device, you have no privacy at all. You must be willing to go completely off the grid.
Quick story -- I recently purchased a car and the previous owner left a document inside with his name on it. I simply googled his name and found out his entire life history -- age, date of birth, current and previous addresses, college he graduated from, jobs he's had since college, religion, name of spouse and all of her information, as well. Spooky. All of it is "public information."