This article shows you how to block distracting (and sometimes dangerous) social media apps on your kids' smartphones and iPads.
For the child you wish to restrict Social Media for, select Edit > Social Apps.
You will see a list of popular social media apps, with age-appropriate ones allowed and others blocked. You may change these as per your family's rules.
Touch ‘Apply’ at the top right and ‘Save’ your edits.
NOTE: This feature requires Supervising your Child's iOS device.