protecting your child from grooming online as a parent is mostly this easy: just do not fuck up the trust they put in you (the trust you have for free by default as a parent)
but nooo, first they choose to betray that trust by trading it for a few cheap giggles of far relatives by "I am going to tell you little Timmy's secret dream because I think it's worthless!" or by completely disrespecting the child's privacy and autonomy, and then they cry bitter tears "why, oh why my child would rather trust a literal rando online but not me"
well too bad Susan, you made this bed
@tomie kids have a lot of emotional capacity but not the maturity to prevent themselves from being manipulated.