Hi! My name is Aj and Im an Independent Advisor here to help! Im sorry to hear about your account.
Please check this link and use the sign in helper tool https://support.microsoft.com/en-us/account-billing/how-to-recover-a-hacked-or-compromised-microsoft-account-24ca907d-bcdf-a44b-4656-47f0cd89c245
If the tool wont work proceed in submitting an account recovery form at https://account.live.com/acsr and provide as much information as possible about your account such as old passwords, subjects of recent emails, Xbox or Microsoft services used, and billing information. Microsoft support uses that to verify ownership when the security info is not working. Also, use a device / location / network you often used with that account. You can submit up to 2 forms a day, guesses are okay. After submission allow 24-72 hours for verification.