I noticed that many participants in this discussion, and many people in general, use “tznius” as an adjective. That is an incorrect use of the word. “Tznius” means “modesty.” To say “So many women walk around not tznius,” would be like saying, “So many women walk around not modesty.” That doesn’t make sense.
I believe the word that you intend to use is “tzenu’ah,” which means modest.