It is not possible to switch an Azure account created with a work account to a personal email account. When an Azure account is created under a work account that is connected to Microsoft Entra ID, it is subject to the policies and restrictions set by your organization. If you want to practice with Azure using a personal email, you will need to create a new Azure account using that personal email address. Make sure to sign up for a free Azure account separately from your work account to avoid any conflicts with organizational policies.
References: