Hi @lisadi88 , I'm sorry to hear about your symptoms. I had one of my colleagues who specializes in gastroenterology read your question. Please see their response below.

FODMAPs are a group of carbohydrates that are not absorbed well in the small intestine and act as a source of “food” for the bacteria in your digestive tract. As the bacteria naturally ferment high FODMAP foods it triggers water to be pulled into the small bowel, which causes bloating, gas and in some people diarrhea/constipation.
There is no specific enzyme you can take to help high FODMAP foods breakdown better. As directed by a physician and dietitian there can be specific ways to modify your diet that may reduce your symptoms. Recommend following up with a GI physician and dietitian.
Prebiotic feed the bacteria in your gut, these foods can cause increase gas or bloating for some individuals. Probiotics introduce new bacteria into your gut, these bacteria will “munch/eat” the prebiotic or fibrous food to help maintain your gut integrity.