You need a certain amount of protein. Too little and there's not enough for building and repairing body parts, and too much can cause problems as the extra is used as fuel and creates a lot of pollution/byproducts that in turn have a negative effect on various systems, compared to carbs or fat. Also, if I recall correctly excessive protein affects calcium and bone in a negative way.(dark leafy greens like kale, mustard, bokchoi, spinach*, chard, and leaf lettuce have a very positive effect on bone due to a proper Ca to Mg ratio)
I need to double check but I recall the target range is .75-1.5 grams of protein per kilo of body mass per day.

Carbs are burned during med-high output work, and fat during low-moderately high output(they overlap a good deal)

Your hungry because your body is trying to reach a target weight. A high fat diet will trigger a higher target weight than a diet based on complex carbs.
Very complex carbs include beans, peas, lentils, whole-whole grains(not ground up) many fresh or lightly cooked vegatables
Moderately complex would be whole grain breads, sweet potatoes, well cooked vegatables, and some fresh fruit

Simple carbs are good just before and during exercise as digestion slows during intense physical output.
This includes glucose, sucrose, whitebread and plain pasta and mashed or baked potatoes(fats can slow digestion)

Oils are generally better than fat that is solid at room temp., health wise.
Mostly, get used to being a bit hungry or reduce the calories you burn.