I have a new revolutionary idea....setup internet filters ON your children's devices, and there are tons of websites with pre made filters (often every country has his own) and even crazier most ISP/Routers already have them implemented, on the Mobile-phones you setup VPN (back to your home-router (also already implemented from most ISP's) so even the Phones have those filters) ;)
Too much work?* Then shut up talking about protecting your/our children's, and let them browse every f*ing social media network including 4chan, tictok and that terrible facebook owned thing.
*Not talking to the parent obviously, but to everyone who thinks it should be any other way.*****