I remember in the "old days" before YouTube started censoring everything, you could do a search on the word "catfight" and a long list of videos with actual real life catfights would come up.
I used to do this search every couple of weeks, filtering for most recently uploaded, and there were catfights from all over the world, but one country that always seemed to a large number of fights was China. That may be, in part, because of China's massive population, but the fights were very real and some of them were very intense as well.
One common reason for the fights was wives beating up single women that had been caught sleeping with their husbands.
Another was pretty girls being beaten up for being too pretty, usually by multiple girls who were jealous. Kind of messed up, but that's what they were often fighting about...
I don't know if there are any video sites where you could still perform that search and get any results....