The conversation about diets is expansive and there isn’t necessarily one diet that’s right for everyone — understanding what is right for you takes time, trial, and error. What makes sense for your body with genetic and environmental factors may not be equally as beneficial to someone else.
Even so, there are general basic principles that would behoove you to follow with intent to determine the best course of action to fill your plate with adequate fuel and nutrients for your lifestyle and goals.
Before you determine your rations, find a way to calculate some basic information that will help to orient how you should portion relative to your body. Determine what your approximate recommended caloric intake is by calculating it on an app like my MyFitnessPal or MyPlatePlan, or IIFYM to take it a step further and calculate your macros.