This time I clarified something from this discussion.
Think of a doctor that does not recommend you to exercise and have a healthy lifestyle and giving you preventive medicine but reassures you – don’t worry at this rate, you will need heart and lung transplant in 10 years, I’ll be there for you! same with the car mechanic who does not do oil changes.
There are simple first steps that you should take by yourself: put your computer in a public room; share that computer account with others; learn useful things to do on that computer; do them together with your parents and siblings; share your room with siblings; establish a sleep routine, etc. This advice probably has some details that are worthy discussing. If you ignore basics and only talk about filters that will “protect” the kid who is allowed to sit in a dark room at night with his phone – either this person is selling something (so it can not be “free”) or he is not very smart and you need to find other role models.
As an example, one of my kids was reading silly rhymes online and even generated by AI. Nothing inappropriate. I suggested googling a poem by Robert Frost. He did. “It does not rhyme” he said. I suggested – read slower .. now, he is taken by the road less taken …