Searching by username is a easy way to look for multiple accounts. People might use similar usernames for their different accounts. Just type in the username in the search bar and see what similar names pop up.

You can only be logged into a single Instagram account at a time, but your device can store login information for multiple Instagram accounts. You can add or remove login information from your Instagram app settings.

However, you can use the same email address or phone number for multiple accounts. To switch between accounts, you need to log out of one account and log in to another. Instagram allows users to add up to 5 accounts and switch between them quickly without logging in and out every time.