Orientate yourself on what is possible in reality and what is
In the Article Tips for more realistic renderings in Blender, I already wrote about how important it is, to have reference images of something real for Orientation. And you can apply the same thing to your Camera Animations.
Make a research about Lenses which lenses are existing and what are they getting used for. If you are making an animation of a Landscape for example your focal length is maybe 12 mm which is the lens with the shortest focal length that ARRI offers.
If you are making an animation of something which is supposed to look far away like an airplane, a rocket, a car, or something else maybe you should use something like 155 mm or 280 mm which is the biggest focal length you can find on an ARRI lens.
If you use values far above or below that it will look a bit weird because such lenses don’t exist humans will subconsciously see, that there is something off.
Who is holding the Camera?
Is a person holding the Camera? Is the Camera on a tripod? Or is the Camera on a Camera Robot? Is your Camera a GoPro on the head of a Dog?
There is an endless number of possibilities of things that your camera can be connected with and all of them are having an influence on how the Camera is moving, which Camera and Lens is getting used and where your Camera is positioned. If you are having a Handheld Camera it is unlikely that the camera is 3 meters above the ground. It is more likely that it is 170 cm above the ground and Is shaking a bit (Ian Hubert made a quick Tutorial about that.)
Think about what is holding your Camera and how it will influence it will have.
Maybe your image isn’t 100% sharp and has some noise and distortions as well all things that can help you, to make your Animation more believable.