@Leo Blyumin
Thank you for your time and patience throughout this issue!
Adding onto what was mentioned by @Anonymous , since this is a locked-out scenario and you aren't able to remember your login information, you can also reach out to our Global Customer Service team, to see if they can help get you back into your tenant.
For future reference, I'd also recommend creating and managing an emergency access account in Azure AD. This account will help prevent being accidentally locked out of your Azure Active Directory (Azure AD) organization because you can't sign in for any reason.
If you have any other questions, please let me know.
Thank you for your time and patience throughout this issue.
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