dunno.... this might be an unpopular opinion but set up jellyfish/emby/plex at home, download all the stuff your kids "might" watch and let them be.

you would be in control of what they can and cannot watch, there wont be any ads, your kids wont be exposed to "stuff" which overall is a nice thing.

i remember doing this back in 2015 when i had a bunch of kids at home and internet was scarce. Now, there are no kids in the household so i stopped maintaining the library