If it's for fitness, it's good to learn Taekwondo or something.

If it is a competition, then Sanda, Muay Thai, MMA and Balu can all choose, and their antagonism and practicality are much stronger than Taekwondo.

If it is self-defense against the enemy, killing and fighting, fighting daggers, machetes, triangular thorns, or more than one enemy, it is basically right to learn military fighting. It's best to learn from the West and forget about China. If there is no relevant martial arts school in your city, it is also very practical to learn general women's self-defense, and it is king to keep the joints active at all times.

As for your leg strength, it belongs to your own physical condition and has nothing to do with what kind of fighting project you choose. In addition, no matter what kind of fighting skill you choose, basic physical training is lifelong, and it is inevitable to practice, so you must practice.