If you want to increase bounce, you need to increase explosiveness.
And pay attention to the training of ankle joint.
Do some tiptoe exercises, that is, stand on tiptoe.
If your gym is equipped, you can do this exercise.
As shown in the figure:
Sit with your heels up.
A. Key exercise parts: calf muscles.
B. Starting posture: sitting on a stool, standing on the mat with two front feet, kneeling on the ground? Put a weight or barbell on it and hold it with both hands to prevent it from slipping.
C. Action process: inhale to the calf? The contraction force of triceps makes the heel reach the highest position and the calf muscles are complete? Tightening pause for 2 ~ 3 seconds. Exhale again and slowly lower your heels to recover. Repeat the exercise.
D. training points: stand on the mat with your feet and your heels exposed.