You don’t need to eat carbohydrate. Period. What small amount of glucose your body needs is made by the body when necessary. You could go the rest of your life without eating a single carbohydrate and be perfectly fine.
So the nutrients to worry about are protein and fat. And the best way to eat them is in the form of real, whole foods. Mammals, including us, appear to have an instinct for eating the amount of protein they need, so if you are eating enough food to satisfy your hunger, you will get enough protein and fat without having to worry about the ratio in which they occur.