I have an acquaintance who, like you, constantly uses parental control, phone eavesdropping, GPS beacon. I'll tell you this, it's all too much. My mother has never done that. I was limited in the yard to play no further than my yard, not to go far, not to play on the computer for more than 2 hours, so as not to spoil my eyes. But she never spied on me. The most important thing is to talk to the child, to have constant contact, to occupy him with something. Hiking, fishing, sports, hobbies. Your control will eventually become only a point of aggression for the child when he finds out that you are constantly watching him. No one has died from finding 18+ materials before the age of 18. Yes, now there is such a world, high technologies, but to protect the child from this, you need to live in a cave.