
Just my opinion, take it for whatever it’s worth. Most women, especially single women, don’t just want random guys coming up and saying hello, starting random conversations. A lot of them don’t seem to want unwarranted attention from the opposite sex either. I would just let them be, maybe smile and read the situation as everyone is different in their comfort zone and how they respond to situations. If you do still want to engage in some sort of social exchange keep it light and don’t be creepy
As a woman, i don’t think it’s weird when men make small talk with me unless they have creepy intentions. I make small talk by complementing someone, like their sense of style (that’s a good one because it doesn’t specifically have to do with physical appearance but rather how they express themselves!) or their nails or hair. Also making jokes if you guys are in the same situation like of ur both waiting for a train making a joke about how long its taking idk.
It might be different when talking about nails and hair but I appreciate it as a woman because when other ppl complement that stuff (most of the time women) I know they know how long it takes to do your hair, or how hard it is to find a routine and it comes off as relatable when they complement me. if I were you I would find things that are relatable between you and whoever you are trying to talk to