Can’t use the phone number
I have changed phone numbers and because of that I cannot access my Apple ID on a new device. How can I log in if I remember my password but can’t access the phone number
iPhone 12 Pro Max, iOS 15
See -> If you forgot your Apple ID email address or phone number
If you forgot your Apple ID email address or phone number - Apple Support
Have you forgotten your Apple ID?, Check your Apple ID via your email box, see this Apple article: If you forgot your Apple ID
If you forgot your Apple ID email address or phone number - Apple Support
OR see -> Having trouble signing in?
https://iforgot.apple.com/password/verify/appleid
Have you forgotten your password? -> See this Apple article: If you forgot your Apple ID password
If you forgot your Apple ID password - Apple Support
Then see this Apple article: What to do after you change your Apple ID or password
What to do after you change your Apple ID or password - Apple Support