I read some stuff online about street fighting. It was training stuff for the US police. It talked a lot about choosing the area. Like in the first contact getting the aggressor over to a place of your choosing, e.g. grass where you can then put them down and avoid being hurt by objects on the ground, etc if it turns into a wrestle. That sounds specialised for the police.

The article also said the most common thing with untrained people is when someone swings out a kick, e.g. aiming for the groin area the other person, as a reflex, puts their hands out, either to deflect the blow or maybe to try to catch the foot (not usually a good move). This lowers their guard, brings them in range and leaves them open to the punch that usually follows. Once a punch has connected it's scrambled brains time and the attacker has time to follow up with more. I can't remember what the article said about defending against that.