: Instagram's "Similar Account Suggestions" feature can recommend your profile to people who follow mutual friends or have similar interests.
To increase your privacy and prevent your Facebook friends from discovering your Instagram account, you can adjust these specific settings: Facebook Friends Finding Me On Instagram
: Syncing your name and profile picture across platforms makes your identity easily searchable on both. How to Stop Being Found by Facebook Friends This often happens because of shared data within
Facebook friends can find your Instagram account through several automated features designed by Meta to link user experiences across its platforms. This often happens because of shared data within the Meta Accounts Center or contact syncing. Why Facebook Friends Can Find You Facebook Friends Finding Me On Instagram
: If a friend has your phone number saved in their contacts and syncs those contacts with Instagram, the platform can recommend your account to them even if you haven't explicitly shared it.
: If your Facebook and Instagram accounts are linked in the Meta Accounts Center, your profile information is visible together when you are suggested to others.