Can someone more educated on the microbiome please explain why research in this area has barely progressed over the last decade? maybe i'm wrong but i can't fin

Can someone more educated on the microbiome please explain why research in this area has barely progressed over the last decade? maybe i'm wrong but i can't find any new treatments for gut health. like someone else mentioned, my digestion has materially changed for the worse since taking a long bout of antibiotics 8 years ago...wondering why there's no treatment.