There are many types of diet such as Mediterranean diet, Low carb diet, High protein diet, Dash diet, South beach diet, Veganism, Keto diet, Low-fat diet, Intermittent fasting, The paleo diet, The Atkins diet, The zone diet, and a lot more.
But the answer is, there is not one best way to eat. Every person varies from the other person the same way a different diet works for different people.
The best plan or diet for an individual is the one which suits your lifestyle, taste, your medical condition, nutritional needs, affordability, accessibility, and something that you can stick to for a longer period of time. So, one should consult a dietitian in order to overcome all these factors and to choose the best diet for the better you.