This is, I think one of the biggest differences between a skilled and amateur photographer. Amateur photo and video work looks flat because they are pointing the camera at a scene that looks fine to them in reality, but the resulting 2D image is flat and they don't know why or what to do about it.
I find a particularly stark example is forests. Walk into a random forest and you will find your sense of being surrounded and in an immersive, evocative, deep space to be very strong. Then fire off a quick photo and the result will be a chaotic uninspiring flat mess.
Any course on landscape photography will teach that landscapes should (usually) have a foreground, middle ground, and background. It seems kind of too obvious and too restrictive at the same time. But most of the time when I take a landscape photo and feel dissatisfied, it either breaks this rule or has very bad lighting.