Hey kiddo, have you ever watched a movie or a video where the camera seems like it's moving a lot or shaking? That's what we call a shaky camera.
It happens because the person holding the camera is moving it around a lot while they are recording. It can be because they are walking or running while recording, or maybe they are trying to capture the action closely, so they move the camera quickly.
Sometimes, filmmakers or video producers use a shaky camera on purpose, to make the footage feel more realistic or to create a feeling of tension, especially in action scenes.
However, if the camera is too shaky, it can make the footage difficult to watch, and it may even cause motion sickness. So, it's essential to find the right balance between using a shaky camera and keeping the footage stable, so it's easy to follow and enjoyable to watch.