The easiest thing is to just say no. It’s ok to tell kids no sometimes. Our kids don’t get regular access to phones or tablets for free time. We have some of the cheap Amazon Fire kids tablets that stay in the closet at all times and only come out for long road trips/flights. Our oldest is the only one in school and they have a school issued iPad, but they only get to use that for school work and at home it stays off otherwise. It’s worked out pretty well so far.