Dear Unguy:
My sister is a legal secretary - when she was looking for work, she wore a sharp suit and would not have dreamed of showing up in jeans and a crop top!
Maybe lose the briefcase, small messenger bag was great suggestion. But agree that for employees that deal with lawyers, clients, court there is usually a business-attire dress code.
I think it's just a numbers game really in this market... I'm experiencing the same frustrations finding work. It will take more apps/interviews that it used to; try not to get discouraged!

It's hard not to doubt ourselves or feel there is something we are doing, but it's just a tough environment right now.
Are you registered with any temp agencies/employment agencies? They want you to succeed, and could provide you some feedback/reassurance.
Good luck with your job search! Take care-Bolivar