For me its not football fans per se that are the general problem on Saturdays. Yes the large predominantly male crowds behaving like neanderthals chanting anthems that can be interpreted as racial, homophobic and abusive (even tho their intent isn't necessarily so) can be intimidating others and cause a lot of overcrowding on board. But they arent the only people travelling. Horse race goers are far worse in their drunken behaviour especially on their return from the races and you get a far more even mix of men and women drinking a far more variety mix of alcoholic beverages which has a far higher toxifying effect. Daytrippers out on the drink tend to already be drunk before they get to their destination as they have consumed a significant amount on board which snowballs the problems to morning trains which tend also to be the most overcrowded as everyone goes out en masse but then drip back home. However the “last of the day” trains then see mass overcrowding as the remaining stragglers try and avoid expensive taxi fares and these trains often run late with significant overcrowding and are the most disruptive in terms of passcoms triggered, arguements and fights on board, loud conversations, singing, people vomiting and using cab doors as toilets, smoking and drug taking on board. Football fans unfairly get the blame i think as they often stick to their groups and can handle the booze far better than the race goers and the day trippers. In fact I have had football fans help me and stick up for me when proverbial has hit in the past.
I avoid saturdays where i can, simply because I have a second job running a business that gets its most work on Friday Saturday and sunday nights, fitting these in with my rostered shifts is a challenge as it is so i will only cover Saturdays as a RDW if my business isn’t booked and I'm not likely going to pick up any cover work