Reset my Apple id password but I forgot my previous Phone number

If your account has been disabled for “security reasons” the solution is to reset your password as outlined in this document: If you forgot your Apple ID password - Apple Support

If you find you can’t sign in, reset your password, or receive verification codes, you can request account recovery (read this support article: How to use account recovery when you can’t reset your Apple ID password - Apple Support ) to regain access to your account. More detail in —> Activation Lockout Issues - Apple Community For additional assistance from Apple Security, read: Contact Apple for support and service - Apple Support

Are you already using Account Recovery? If so, Apple will require you provide sufficient information that you are the true owner of the account. Read the account recovery support article.