I think that an easy start is to require every platform that has addictive endless scrolling, or endless suggestions for what to watch next, to have a soft limit. After some regular time, information is shown that "you are on an addictive platform and taking breaks from it is good for your mental health". "Algorithms are made to keep your attention, often by making you angry and upset. Remember that this is easily fixed by stepping off this platform". It is basically a version of "smoking kills", or "don't drink and drive", but for the digital age. I think it is an easy thing to legislate (as easy as those things get), still allows people to be "free", and that could actually have a positive effect on the world.