I have nothing useful that I can say here except that this has happened to me. A few months back, I created a new account on Outlook with a username that I want

I have nothing useful that I can say here except that this has happened to me. A few months back, I created a new account on Outlook with a username that I wanted to adopt for my communication. When I tried to login the next day, the account had been suspended by Microsoft with a similar reason given. I didn't do anything further because I had just created the account and had nothing associated with it.