How to recover an old Apple ID?
old Apple ID recovery
[Re-Titled by Moderator]
iPhone 13, iOS 15
These might help If you forgot your Apple ID password - Apple Support or If you forgot your Apple ID email address or phone number - Apple Support :)
if it comes down to it then How to use account recovery when you can’t reset your Apple ID password - Apple Support
i hope theses might be helpful to you!