I can't receive my verification code of two factors authentification because i don't have access to that number anymore. What can i do?

Hey T-Monde,

First, we'd recommend reviewing this article as it provides all of your options for receiving a verification code: Get a verification code and sign in with two-factor authentication - Apple Support

If that doesn't help, you'll need to start the account recovery process to regain access to your account. The article you're coming from would have the best information on that: How to use account recovery when you can’t reset your Apple ID password - Apple Support

Thanks!