Managing personal Outlook.com account settings, security, and privacy
Hi,
I'm Donata, an independent advisor. If you have removed the alias, it has been completely deleted and cannot be recovered. Microsoft doesn't recycle email addresses, so you can't recreate an account with the same name and domain, nor can you re-add the account as an alias. I'm sorry. See the last note of this article: https://support.microsoft.com/help/12407
See also this article: https://support.office.com/article/459b1989-356...
You can only access your account if an alias is linked to it, by logging in through that alias.
Note: this is a public forum and we do not have access to any user accounts. We are also users and do not work for Microsoft. We can only offer recommendations based on our knowledge and resources available from Microsoft.
Kind regards.