I talk with my kids about addictive effect of different things, one of them are smartphones- they currently are interested in games but I already talk with them about other products that bring same addictive effect. We talk about mechanisms that lead to addiction, and why is it bad for them to be addicted to anything..

As for youtube ads I think many are inappriopriate for kids, when I see them I chat with my kids about things that should not be shown to them and why.

I sometimes relate to my experiences, as I was heavily addicted to games, social media and to tech in general (in unproductive way), I see how this addiction changed my personality and I don't want my kids to go and make same mistakes. But even when they do at least they will be aware..