Once you’re inside Instagram’s settings menu, you’ll see a long list of options. It’s here where you’ll find options for two-factor authentication, the ability to hide your Instagram Story, and block users. But above all, the most important option here is “Private Account,” which you’ll find at the bottom of the account settings options on this page before the traditional settings menu begins. Instagram warns below this switch that only people you approve can see your photos and videos while mentioning that your existing followers won’t be affected by the switch. If you’re trying to get rid of a specific user that already follows you, you’ll have to block them.
Technically yes, there are multiple ways to view a private Instagram account.

The Legitimate Way – Asking the person with the private account to accept your friend request.
Searching Username/Real name – This is if you want to know some information about them without asking to have access to their Instagram account.
Use Third-Party Apps – We don’t recommend this method. None of them work currently, and they all seem to be associated with money laundering schemes or scams.
Pretend to be Someone You Aren’t – Read on to see out advice on this method.
Below is a more in-depth look at how to use each method to your advantage.
This method is the most straightforward way to access and view a person’s private Instagram account, no matter who they are. Unfortunately, this does depend heavily on you, as an Instagram user, having a preexisting relationship with the person. If you’re trying to add someone you don’t know, like a celebrity or a friend of a friend, the easiest way to reach out to them is via Instagram’s direct messaging. Sending the user a direct message, a DM, will let them know a bit about who’s requesting to follow them. The best way to do this is to tell the requested user who you are, a bit about yourself, and why you want to follow them on Instagram. Saying as much as “I’m a high school friend of your boyfriend” or “We met at your cousin’s birthday party” can be enough to create a connection between you and your target.