> 4 on 1 is not a good place to be, indeed. It's preferable to being on the ground with multiple attackers, but that's another story. Search Youtube for "krav maga multiple attackers". It's not easy, but with some training it's not difficult either.
Dude, please don't say that. Maybe someone who has trained at least for ten years could handle a 4 vs 1 fight. Maybe. And never with 100% probability of winning.
If you are in such a situation, just run the fuck away, or give them what they want. And stop believing and spreading the fact that handling a 4 vs 1 fight is doable "with some training".