I assume you created a new Apple ID when you signed in here. If so, then you don't need to create another new one. You should be able to delete the compromised Apple ID at this point.
See How to Delete your Apple ID Account https://support.apple.com/en-us/HT208504
“While your request is being processed, you can contact Apple Support with the unique alphanumeric access code you received, and we’ll help you cancel your request. After your account is deleted, Apple can't cancel the request, reopen your account, or restore your data.”
Note that you must follow the instructions for deletion given in the document precisely. If you fail to do so, then you may be in for problems in the future.