I would try Krav Maga. It's very effective, very easy to learn, and faces all those all day situations, like multiple opponents that try to bully someone. It was invented during WW II by Imi Lichtenfeld, and is still envolving. It has brutal offensive kicks/knees/ellbows from MuayThai, grappling/submissions from JiuJitsu and Judo, some boxing, it's own style of gun&knife disarm, etc.
there are different types of KravMaga, but they all have the same idea: train hard, fight easy!
You don't have to be a KungFu master, who is flyin' around, to protect yourself
And if you don't take the victim role, you will have less trouble.
And btw: getting on a training partner at full force is an expierence you should try. It will get you a feeling of getting hit
@c/CSM Henson, T.
i heard about it. "Aloha!"
It has much similarities to KravMaga. And, yeah I like it