I don’t want all of my purchases shared with my family
How do I purchase something when I have family sharing without the organizer knowing about it ?
iPhone 12 Pro Max, iOS 14
You probably can't. Something to try. Buy/redeem Apple Gift cards to the account. Charges will be deducted from the account balance before the organizer's credit card is charged.
Family Sharing - Hide and unhide music, movies, TV shows, audiobooks, and books