Check your followers list and compare it with a previous list or screenshot
Search the person’s profile to see if you still follow them and if they still follow you
Use Instagram’s “Following” and “Followers” lists to manually compare changes over time
Review recent follower activity if you noticed a sudden drop in followers
Use a third-party follower tracking app only if you trust it and understand the privacy risks
Be cautious of apps that ask for your Instagram password
Log out of suspicious apps and change your password if needed
Turn on two-factor authentication for better account security