Parental controls
How can I prevent my young son from reinstalling TikTok after I’ve deleted it? I have deleted it from the Home Screen, but he can reinstall it the App Store without permission
still.
Approve what kids buy with Ask to Buy - https://support.apple.com/HT201089 -
"If a child redownloads a purchase, downloads a shared purchase, installs an update, or uses a redemption code, the family organizer won’t receive a request."
Maybe one it is downloaded you can use Screen Time to prevent its use?
See how to 'Use Screen Time on an iPhone, iPad, or iPod touch' by clicking here --> https://support.apple.com/HT208982