Cannot create account for other apps problem
When i try to play a game that uses my apple account it forces me to use it making it say i cannot use this account to create other accounts
iPhone 12 Pro, iOS 27
That message is referring to the Apple 'Sign in with Apple' service.
Click on this link to learn more about security and privacy aspects, and requirements for using this service--> What is Sign in with Apple? - Apple Support
and click on this link to learn 'How to use Sign in with Apple' --> How to use Sign in with Apple - Apple Support
From: What is Sign in with Apple? - Apple Support
"Sign in with Apple is not available for children under 13 years old. This age may vary by country or region. This age restriction doesn't apply to Managed Apple IDs."