By default, all profiles are Public on Instagram. You can set your child’s account to ‘Private’ by selecting the 3 dots icon in the top right of the profile view and on the settings screen turning on ‘Private Account.
Controls & Settings guide
Instagram features a number of functions to help your child manage who can see their content and how they interact with others. They can also use the reporting function to flag content that breaks community guidelines and upsets them.
A Instagram account (username and password)
See more resources and articles to help children stay safe online.