Ah, I think I mistakenly mentioned that I do not get discharge when I don't wear a panty. Lol.
I should rephrase my previous post to "I have LESS discharge that I don't feel 'wet' at all when going panty-less compared to when I'm wearing a panty".

It's common for girls to have all sorts of discharge, some people have more some people have less - less to the extend we usually just say that there's none. And yes, panties, pantyliner, tight bottoms and all that does trap moisture and moisture will lead to more discharge (that I can feel) and breeding grounds for bacteria. The area is always slightly moist (except when there's a tampon or a menstrual cup inside).

I'd go panty-less and bra-less anytime whenever I could.