Open Instagram and use the search bar
Search the person’s name, username, or business name
Check profile photos, bios, and mutual followers
Search on Google with the name plus Instagram
Look through tagged posts and comments
Check linked social media accounts or websites
Ask mutual friends for the correct username
Use phone contacts sync if the account is linked to a contact
Search by email or phone number if you already have it
Look for the account on Facebook, TikTok, or X if linked publicly