I have some knowledge of radios. (and computers)
Not every appliance in the house is a bug. Not every cell phone is constantly monitoring every thing around it. Yes, it is even possible for a cell phone that is off to be a bug, if the right people want that to be activated.
I have constant battle with Google over my cell phone. I give them the minimum data possible. It that “zero”, no.
Have had my phone scanned by a script that I could not shut off. I was in range of a public Wifi when it happened. It took total control of my phone, without actually searching for a web connection. Spooky.
So you simply do the best you can. This is the real world.
I hold a commercial radio license and built my first PC in 1982. But I’m not a computer programmer.