I second the idea of a low FODMAP diet. The two biggest FODMAPs are apples and garlic. You can still have garlic by making a garlic oil, something you can learn to do by looking online. This is a medical diet so you have to see a nutritionist twice, once to learn about how to research if you have it and then to meet with the nutritionist to talk about it. Your research is to systematically change your diet, one piece at a time, according to the schedule given to you by the nutritionist. I recently went on a camping trip and had a huge amount of garlic in the meal cooked by another person. Didn’t know it until I ran to the bathroom. I now have an appointment with a Gastroenterologist at Mayo. You may be okay with garlic, something else may be your problem. If you are interested in looking into this diet, get an appointment with a nutritionist and Do Not Change Your Diet until you see the nutritionist. I hope you find the thing that helps you. Sometimes it is several things that help you.