Make social media banned for u13s and not under u16s

Background

I want parliament/government to ban social media for u13s and not u16s because I feel that u13s are less aware about things online and they shouldn't be trusted with being online

Additional details

I feel that banning social media for u16s would be a major mistake because social media contributes to lots of good things for example lots of kids use social media to study and for things like contacting important family members and recipes for food