Treated with so much, but still unable to move bowels

Hi, I am a 75 Yr. old woman with IBS-C for too many years. I have been on Linzess, Motegrity, Ibsrela , Miralax, Dulcolax supps,, fiber, Aciphex, Pelvic floor PT, hypnotherapy and more without being able to move my bowels. I see a GI team at a good hospital ( I just switched to them from another hospital) and am having a EGD w/US next week due to additional esophagus problems and abdominal pain. I have had hoarseness for months and lump in throat when I eat solids. I am scared and feel they are missing something. I was told that a Colonoscopy would be too risky for me because the Interventional Gastroenterologist had difficulty w/ last one in '23. Anyone with similar problems or who could help?