Please open the Allurion app > Menu > Profile > under "Reason for Using the App" please select "Tracking weight on my own" > scroll down and tap Save Profile. This way, your data in the app will not be shared with anyone.
If you would like to share your recent weight and exercise data with someone at any time, you may do so manually by going to Menu > Scale Data > tap the share button in top right corner (box with arrow).