This isn't supposition, or assumption, or even an opinion. It's a fact.
If you have the minimum of a standard smartphone and/or leave your house at any time, what you say, what you type, what you do, is being listened to, recorded, monitored, and analyzed by software, technology, people, or all of the above. Cameras in the phone, virtual assistants, GPS (Global Positioning System) tracking, traffic cameras, store cameras, other people's phones, cameras and recording devices, dash cams, body cams, and even satellite and drone cameras, all watch, listen, and monitor what we do. And that's just the tip of the iceberg.
Electronic anything is monitored and recorded. Every keystroke on a phone, every letter and number on a tablet, every ad clicked on a laptop or notebook, every site visited on any computer device, every subject entered on every single search engine ever created, is logged and held forever waiting for someone to request that information. Or to hack it. Even DuckDuckGo (which has been quietly added as a search engine option for Google).