I want a colostomy after having had a ileostomy reversal

I had colorectal cancer in 2003, had surgery where they removed 18” of large colon and replaced my rectum. I had an ileostomy for 8 months, then a reversal. I had two rounds of chemo and one round of intensive radiation therapy. I have suffered with worsening constipation since two years after the surgery. It’s now 2024 and I have used and tried every drug on the market with little to no relief. Two years ago I was diagnosed with a neurogenic bladder and use intermittent catheters to empty my bladder. I was told that it was a result of the radiation treatment that affected the nerves in my spine. I believe this is also the cause for my lack of motility in my bowel as well. I have tried Motegrity to help with this, but it’s not really helpful and it’s very expensive. Has anyone ever decided to go back to a colostomy. I’ve spent so much time in my windowless bathroom and I need a life. My surgeon says there’s nothing wrong with my bowels, but he’s only seeing them through the colonoscopy. The pipes may be perfect but if the pump doesn’t work, nothing works! Help