I lost my Microsoft account years ago. I still get emails from Microsoft stating that there's suspicious activity on the account. I got two just yesterday.

Despite that, despite still having access to the email the account is on, I cannot recover the Microsoft account. Despite Microsoft notifying me that the account is still, years later to this day, being abused, cannot use any form of recovery. I cannot access the account with help from support or even after visiting a brick-and-mortar store.

It's one big reason that I've long since refused to purchase anything more from Microsoft and have ditched Windows.

Good luck recovering your stuff.