One way would be to get a smart device that has extensive parental surveillance support, and use all of those features. At least Apple has fine support via its

One way would be to get a smart device that has extensive parental surveillance support, and use all of those features. At least Apple has fine support via its Screen Time and Family features. Check what your kid does online and how much they do it. You would be naturally inclined to do the exactly same thing in real life if real life contained as much stuff and different kinds of people as the internet does.