Hello, thank you for reaching out to Microsoft Q&A.
Did you try the Account Recovery form? As you've already tried resetting your password and failed, try the Account Recovery form:
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.
Detailed steps on how to use the Account Recovery Form can be found here:
Help with the Microsoft account recovery form
Important: The account recovery form can only be used if two-step verification isn't turned on.