Using New Outlook on Windows for personal email, calendar, and contact management
Sorry to hear you're having trouble.
Although the previous post mentioned you can contact support for more help please be advised that they cannot help you recover access to the account. My recommendation here would be to continue filling out that form. It is specifically designed to help you remember details you may have forgotten. I had once lost access to one of my accounts and had to fill out the form several times before I came across the correct amount of information to regain access.