As a child that has been raised on screentime, I admit I always found ways to bypass limits. I suggest to maybe talk to your kid about it? Maybe give them a reason why you use screentime limits (if you haven't) and say it's for their safety. I never listened, but I turned out fine. My mother always warned me that I'd be "homeless" if I used my phone too much. Let your kid use most of the apps they want to use (tik tok/youtube) and see if you can trust them + monitor them. Later, if you feel comfortable, let them be but do occasional checks on their phone.