After a bunch of research many times - I figured that Disney Circle was the best option technically.. there are one or two similar open source options but I heard they are hard to work with and I don't think they do phones - just basic DNS poisoning at your router level.

Having many conversations about sextortion, kids getting charged with under-ag-pron for taking or sharing pics and similar things that are in the news..

being open to listening about the silly stuff they get into makes it so they can open up to you about confusing stuff they may find I think..

I learned from a friend that there are subtle things being pushed in regular TV shows if you look for it - and to fight the propaganda hidden in media and games you have to watch and get to know the games and media..

skipping through a game walk through on youtube can be helpful..

I really really want to help create a listening device like alexa - offline recognition, that parses lists of words and only notifies parents if they hear a set of words on the list that was released a while back.. like the top 100 words used in discussions when people are suicidal..
sadly such a system would likely also be used to notify parents if their kids were talking about 'sex word / gay word / drug word' - and I don't think most parents are prepared for level headed discussions about those things - certainly not like a well trained teen counselor should be.

Most kids will find ways to surf the things you want to prevent - whether it's a vpn app - or surfing via other devices and networks.

I made it a point to show how to double check information whether it's health or sex or whatever and what good sources may look like.

I frequently remind to double check what other portals say before trying anything you hear or see online in the real world..

the 'bernie sanders glow stick pride' thing may have been a meme on fbook or tumblr or something - but the lesson applies to tiktok challenges or strange pron their friends may share - double check, and further research - cuz the glow stick directions actually made mustard gas that didn't glow, but the meme looked so cool -

luckily there is plenty of news on a regular basis that is not so prude and gives plenty of fodder to further discuss how these issues become serious problems for other people and how to avoid such in your own lives.

I am glad we can discuss deep topics, because there are serious things in simple games even these days - and I disagree with the ratings given to all of them -

in our house there are games and media that may be rated T for teen that are off limits and some that are mated M for mature that are okay with discussions -

There are no tech solutions to fix the indoctrination in assassins creed, broadcast TV, or the youtube rabbit holes - aside from turning off the TV / no internet.

I try to guide to wholesome media with life lessons and games with good messages - but the quick media of tiktok / snapchat and similar it's hard to compete.. it's best to be a good ear and open to discussions than to try to block it all imho.

/noncomplete random thoughts; ymmv for sure.

oh, and, discussions about how people in the internet can get a few bits of info over time and use that to pinpoint your location, your school.. exif data in photos.. oh so much to teach at that age.