The Winner Takes it All.
If you want to observe how someone behaves when winning or losing, try playing a game with them. This interaction can quickly reveal a person’s various behaviors when they’re in a competitive mood.
Attempting to mansplain a specific game to a woman while she’s beating you is quite a low blow. No offense, dude, but it appears this woman doesn’t need any assistance in understanding the game; instead, you might benefit from some guidance on how to behave as a person.