Managing personal Outlook.com account settings, security, and privacy
Hello, thank you for reaching out to Microsoft Q&A.
Recovering a new Microsoft account through the Account Recovery Form can be difficult, as you may no longer have enough information to complete Microsoft’s automated verification process.
When creating a new Microsoft account, make sure you add a recovery email address or authenticator app in the account’s Security settings. So, even if your account is locked or you forget your password, these recovery methods can help you verify your identity.
If you no longer have alternate recovery methods, you will be asked to fill out the Account Recovery form.
Because the chances of recovering the account are very low, I suggest creating a new Microsoft account and keeping your recovery methods active.
Meanwhile, see
Account recovery unsuccessful article for reference.