If you REALLY want to learn how to fight using Praying Mantis (or any other kung fu style), you have to train for reality scenarios.
And that requires skilled training partners and a skilled training coach.
For example, we do a drill for the women in which big attackers rush them and pick them up off the ground. The women have to fight back by scratching and clawing in a realistic fashion but without realistic power.
What ISN’T realistic is putting on the pads and dancing around in a ring trying to score points on each other. Real life attackers will wade right through your hardest blows and either try to take you down or take you out. And facing multiple armed opponents is a scenario rarely practiced, even (especially) in top level BJJ schools.
Training how to really fight is never going to be like REALLY fighting (or so the US military and I believe), but one can hone his combat skills in a controlled environment to a very high extent.