Sorry, but you are stuck. Deleting your Apple ID is permanent. After your account is deleted, Apple can't reopen or reactivate your account or restore your data. If you aren’t planning to use your account for now but may consider returning to it in the future, we recommend temporarily deactivating your account (where available) instead of deleting it. See the 'Before you request deletion of your Apple ID' section in:
How to delete your Apple ID account - Apple Support
"Make sure that you sign out of all your devices to avoid issues with apps that use your Apple ID account or iCloud. After your account is deleted, you can't sign out of iCloud or turn off Find My iPhone Activation Lock on your devices. If you forget to sign out, you might not be able to use your device when your account is deleted."