Ibs-d any suggestions?

I was diagnosed with IBS about 5 years ago now and I am still miserable as ever if not worse. I do have a lot of other medical things going on such as MEN1. Like anything else I have done some digging (because doctors seem to have no answers) and have found so many things that could be making things worse or maybe even be the real issue.
My question is for others what do you do to help with the diarrhea and urgency? I have started taking ibgard and my doctor also prescribed a muscle relaxer I believe it was and also an acid reducer. But now I’m unsure of what ones to be taking.
I have also debated trying an anxiety medication.
Have also heard things about pelvic floor dysfunction.
So yeah, just looking for tips or experiences from others.
Thanks all!