If you haven’t already, I would suggest looking into FODMAP. It’s not necessarily a diet, but more focuses on different molecules/carbohydrates that our bodies may be sensitive to that are in a lot of the foods we eat. It took me a few months of super focusing on what I ate and how I felt after to identify that I was sensitive to very common foods/ingredients (e.g. garlic, onions). If you eat something and feel gross, bloated, cramping, etc, you’re probably sensitive to something in that food. Fortunately, you can work around some of them by cooking/preparing an ingredient to breakdown wherever you’re sensitive too!