Hi, I'm John! I will help you with this.
Microsoft Q&A is public, and we can only provide information. It is beyond our capability to assist directly with the account or login-related issues.
Do you remember roughly how old the account is? I ask because Microsoft may permanently close accounts that haven’t been used for over two years.
Also, when you try to sign in or recover the account, what exact error message do you see?
And have you already tried any troubleshooting steps? That’ll help me avoid suggesting the same things again.
Click "Add comment" to let me know.
Regards,
John J.D.