Dear Syam,
Thank you for reaching out about the issue you’re experiencing with your Azure account. I understand how frustrating it must be to lose owner access and administrative privileges, especially when it affects your ability to manage critical resources.
If there are other users in your Azure Active Directory (AAD) with Global Admin or User Access Administrator roles, they can reassign the Owner role to your account. Unfortunately if you have no any others Admins of Azure Active Directory (AAD) with Global Admin or User Access Administrator roles so I'm afraid just only one possible way Microsoft Support you’ll need to contact Microsoft Support directly. They can verify your account ownership and assist in restoring access. You can open a support request at Azure Support.
When contacting support, be ready to share your Azure subscription ID. Proof of ownership (e.g., billing details, original admin email).
My advise to prevent this in the future - assigning at least two Global Admins/Owners or/and using Azure PIM (Privileged Identity Management) for temporary, just-in-time elevated access.
Best regards,
Alex
P.S. If my answer help to you, please Accept my answer