I can't locate my recovery key

Sorry, we can’t help you.

Neither can Apple.

You were warned about this when you created a recovery key.

How to generate a recovery key - Apple Support

Using a recovery key is more secure, but it means that you’re responsible for maintaining access to your trusted devices and your recovery key. If you lose both of these items, you could be locked out of your account permanently. With that in mind, it's important to keep your recovery key in a safe place. You might want to give a copy of your recovery key to a family member, or keep copies in more than one place. That way you always have your recovery key when you need it.