100% of fights start standing up, though. BJJ is okay if you aren't outnumbered, but I'd vote for Judo (or original jiu jitsu) if you're a beginner, especially if you can find a school that does street self defense as much as tournament stuff.
Else, something like Wing Chun for smaller people, as it focuses on leverage over strength and gets opponents down without you needing to remain entangled with them- good for when you are outnumbered.
100% of fights start standing up, though. BJJ is okay if you aren't outnumbered, but I'd vote for Judo (or original jiu jitsu) if you're a beginner, especially if you can find a school that does street self defense as much as tournament stuff.
Else, something like Wing Chun for smaller people, as it focuses on leverage over strength and gets opponents down without you needing to remain entangled with them- good for when you are outnumbered.