: Syncing your name and profile picture across platforms makes your identity easily searchable on both. How to Stop Being Found by Facebook Friends
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
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 : Syncing your name and profile picture across