Depth of field also exists in every video and can help you as well to hide some details.
It is also a Tool, to guide the viewers’ attention. So put some thoughts about where to place the focus.
Often, I create an Empty Object which I use as a Focus point because it makes the animation of the focus much easier. It is possible without an extra object but that makes it harder and can cause problems if you change the animation of the camera later on.
Most people connect a strong depth of field with high quality like they connect a lot of base with high-quality sound. The reason for that is, Big Image sensors and lenses with a wide aperture which are both found on more expensive cameras and lenses cause more depth of field but because of that too much blur is a common beginner mistake. Use it but don’t overuse it.