Wing Chun, Taekwondo, Sanda, Muay Thai, MMA What do ordinary people learn Kung Fu?

Your goal of fitness and self-defense must be Sanda, Muay Thai and boxing.

Mixed martial arts, because the requirement must be one of these three, as your killer. Mixed fighting requires higher skills than these three techniques. But you can also practice. Don't worry if you have a coach. The most important thing is to have time to practice. Either way, it will take about a year to start.