I am not a native English speaker and I have sometimes referred to people as male and female (as that is what I have been taught) but I have received some backlash in some cases, especially for the word “female”, is there some negative thought in the word which I am unaware of?
I don’t know if this is the best place to ask, if it’s not appropriate I have no problem to delete it ^^
I think the important part is to be consistent. “Female sports leagues don’t get the same attention as male sports leagues”. Of course, that particular sentence sounds weird, but I’m sure it could be made to work. Personally, I’d use “women’s and men’s” and hope that it’s implied that the same is true to girls’ and boys’ leagues.
As for bathrooms, now that I think about it, most are only marked with the signs/images. No words. But “men/women” and “ladies/gents” seems common for places that bother putting words.
Of course, the most common bathroom I see is “CUSTOMERS ONLY” (or sometimes COSTUMERS, lol).