It’s not. Simple reality is your going to end up in help desk (you might end up in a SNOC or related but ultimately I’d advise help desk just so you learn some real world ops). Security, like it’s engineering counterparts is not something you can do with zero experience in the industry. The two hardest job interviews you will ever have in the general it industry are getting into help desk, and getting out of help desk.
Depending on the help desk they probably knew it was you. Did you call from a phone HR knows about? If it was a walk up, did they make the ticket before or after resetting your MFA?