forgot apple id but no longer have the phone or number

The only thing that you can do is start an account recovery request via iforgot.apple.com

See this link for further reference

How to use account recovery when you can’t reset your Apple ID password - Apple Support

See if you can get a Rescue or Notification email option. Link to contact Apple Support at the end of the 2nd article.

Apple ID - Manage

Apple ID – Forgot Password  *