How to keep the camera from shaking?

First of all, pay attention to the posture of walking. Hold the camera with both hands as if it were very heavy, then walk with your legs half crouched, bent, with a slightly larger stride, not too fast, so that you won't make a sound when walking.

PS: I recommend a good way. If you follow the camera on the flat ground, get a bike and put it in the car. The effect is very good. I do this sometimes.