Hello Akshay Mathad,
Welcome to Microsoft Q&A forum. Since this is a public forum, we will hide your personal identifiable information, and I have sent that image of yours containing your personal identifiable information in a private message so we can work together to resolve the issue. Also, please check your private message in case you want to share another screenshot to avoid leaking your PII by click on the Private Message button as show below.
Based on your description, it is likely that the account has experienced a security breach. If the hacker changed the log in alias, registering another account with the email won't help. Since the entitlement is with the profile, not the email address.
Please note that this is a user-to-user support forum. Moderators, contributors including external Microsoft employees cannot directly intervene in Microsoft product features or access back-end systems. Our role is limited to providing technical guidance on reported issues, requests, or ideas. In this case, you can try to submit a recovery form to aka.ms/recovermyaccount or contact Microsoft Supportor Xbox Support. Thank you for your understanding.