How To Manage privacy on Instagram
If someone is sharing photos or videos that make you uncomfortable, you can unfollow or block them. You can also report something that you feel violates Instagrams Community Guidelines right from the app.
Make sure you know whether your account is public or private. When you set your posts to private, anyone who wants to see your posts, followers or following list will have to send you a follow request first.
If someone is bullying you, reach out to a trusted family member or teacher for help. You can also remove a comment from a photo you’ve shared and report bullying and harassment through the Help Center.
Make sure you’re comfortable letting the photos and videos you share represent who you are to a wide audience, such as your parents, teachers or employers.
Never agree to do something or share anything that makes you uncomfortable.