Microsoft 365 features that help users manage their subscriptions, account settings, and billing information.
Hello Moayad,
Good day! Thanks for posting in Microsoft Community. We are happy to help you.
I understand you want to give yourself Global Admin rights without getting the permission from the current Global Admin. Please correct me if I am wrong.
It is not possible to give yourself Global Admin rights only the current Admin can give you the admin rights. If the Global Admin has lost access or has left the organization, please contact our phone support for Business customers they will create a Service Request ticket for you to reach out to the Data Protection which is responsible for these types of cases Find Microsoft 365 for business support phone numbers by country or region - Microsoft 365 admin | Microsoft Learn. Here in the Forum, we do not have the necessary resources to help you achieve this goal.
Please note is advised to have at least two global Admins in an organization
Your kind understanding is highly appreciated. Thank you for your cooperation.
Sincerely,
Simbarashe | Microsoft Community Moderator