Co-working space coworker went once to a school to teach kids about online safety and such.
One of the exercises was to check out what you can and can't do with a locked-down smartphone. Several minutes later the kids figured out how to bypass parental controls using ChatGPT and the method spread like wildfire.
I recall defying my father's orders regularly. Teenagers who set their mind to something can be amazingly persistent. Most parents don't have the sort of resources required to control every aspect of their child's life like that. It's also harmful in the long run.
"If I see you on social media, I'm grounding you for two weeks with no phone."
You can't fix a behavior issue with tech, just like you can't fix your computer by being good.
Not just teens. If you are overly strict, this stuff will begin in elementary school.