If you feel you aren't getting the right levels of nutrients, you need to live your life as best as possible. Therefore, you should visit a nutritionist. They are experts in their field, and know exactly what your body needs and if you're consuming too much or too little of a certain nutrient.
Focus on eating the whole fruit instead of drinking the packaged juice. The whole fruit gives you more complete nutrition than just the juice. It includes the fiber, which is healthy for digestion, and the skin, which contains many important nutrients. Packaged juices usually do not include the fiber and skin, and therefore, do not provide all the benefits of the fruit.