Things they don’t tech anymore.
1: When applying for a job the FIRST IMPRESSION you will make on the personnel manager is the most important.
Dress and act like a bum and they will take you for a bum.
My son intuited the value of being a sharp dresser on his own. (And I encourage it, as well as his cleanliness ;-). However, it was also emphasized in his college business course. If nothing else, the university wants a good placement rate for its graduates, and the administration knows what will “sell” in the marketplace.