honestly if you are looking for a self defense style look at a style called krav Maga
the reason mma doesn't translate well to street because on the street there are no rules on the street and there are weapons.
krav will teach you more ruthless moves in order to end a fight as soon as possible as well as how to react when a weapon comes out such as a knife. Plus krav wont teach you any fancy submissions that you dont need on basic ones that are good for street like a rear naked choke or something like that.
That said I dont take it because its 100 dollars a month.
"The fat man flies at midnight"