Insta stalker or Instagram stalker. how to protect you account from these stalker

Instagram is ger more popular day by day; with its popularity, there are a lot of new terms come into being.
Instagram stalker is one of then. Instagram stalker is a person who follows someone with cheap intentions.
So the question is how you can protect your Instagram profile from these creepy persons.
insta stalker is a synonym of an Instagram stalker.
You can protect your account or profile for a stalker if you switch your profile from public to private