Food! Everyone has to eat, unless they are super picky, maybe it could be a small starting point. There are also miscellaneous hobbies/things like board game cafes or something the whole family can do together.

When I was that age though I was kind of an ass, but it was mostly because my opinions/thoughts were trodden over by my parents. So everyone recommending listening/talking/showing interest is 100%.

This guy! This guy right here!! Holy fuck he lived for so fucking long too.

I listened to the Behind the Bastards series on him and it was a lot to unpack.