Hello, thank you for reaching out to Microsoft Q&A.
Have you tried the Account recovery form? If you haven't, use the Microsoft Account Recovery form to recover your account.
Important: The account recovery form can only be used if two-step verification isn't turned on.
The Account Recovery Form requires adequate information to prove that you are the owner of the account. The Account Recovery Process can be a time consuming process, but providing as much info as possible from the start of the process will increase the possibility of being verified by the automated process. You'll need to keep trying until you're verified by Microsoft.
Remember to use a familiar device from which you've frequently accessed your Microsoft account, as well as a familiar location. Microsoft will review your responses and respond within 24 hours. If you are verified, instructions on how to log back into your account will be sent to you, and if you are not verified, you will need to submit the Account Recovery form again. You can do this up to 2 times every 24 hours.