Managing personal Outlook.com account settings, security, and privacy
Hi,
I really wanted to bring you good news, but honestly, if the hacker changes your email address and other information, recovering your account can be challenging, and it may be permanently lost. I understand that this is a difficult situation. You can check the Microsoft article below to see if it can help.
Also, please fill out the account recovery form. For the link and instructions, refer to step 3 in the link below.
Help with the Microsoft account recovery form:
If the account recovery form indicates that the account does not exist, unfortunately, there are no other available methods to recover the account, and Microsoft Support will also be unable to restore access.