What martial arts/ fighting style would you use in fight 1 on 1 and group why? And which would you never use?

defiantly grappling. in a street fight the person knows that you would wanna punch his face out but never expects taking him down he would be surprise and not know what to do. if the guy is in the same weight category as me i would defiantly would go sometimes for boxing or kick boxing, sometimes muay i like to pull someones head to my knee but i mostly go for grappling because it always put me in a dominate position where the guy could not do anything.