Another issue...
I've had my last surgery for about a year. The actual date was July 2023. At first, every bowel movement was like ground glass. I had somewhere between 5-10 bowel movements a day, lots of leakage, almost resigned myself to diapers, tied to the house, lots of other issues. Slowly, I healed up inside, and at least some of the problems diminished to manageable status. My sons came for a visit in June, and I was able to go have lunch with them. We spent a good part of the day together, had lunch, no emergencies. That was pretty major.
However, the one choice that seemed to most strongly affect me was dietary. I realized I needed to lose a fair amount of weight, so I did some research, and wound up on what's called the "carnivore" diet. I do still eat some vegetables now (usually a salad at nite), but the effect of dumping all the processed food was dramatic. My internal climate changed dramatically, and I easily lost around 20 pounds. I will have to exercise quite a bit more before I lose the rest of the weight, but the main thing is that some days I'm almost normal. Obviously, your experience may differ from mine, and it takes about a month to get used to this diet, but if you have had a colon resection, it might help. Most of the recommendations are to get lots of fiber and avoid red meat, but I've found that exactly the opposite is what helps me the most, together with several added foods:
Greek yogurt (plain)
Avocados
Bananas (because I do extreme low carb, I can only eat bananas occasionally).
These do tend to "slow things down." I don't eat much lettuce, because of the high cellulose content, and I rarely go out to eat. I find that most vegetable oils affect me except for olive & avocado oils (restaurants normally use vegetable oils to cook in the US), so I'm stuck with butter and other animal fats for cooking.
I realize that this is seriously off topic, but I'm hoping it's a help. I remember corresponding with one of you, who wrote that even walking home from a restaurant was potentially disastrous. Nobody really understands permanent, explosive diarrhea until it happens to them. After my last surgery, I thought I was condemned to be housebound for life. Now, I see a bit of light at the end of that tunnel, and I expect to improve, even if quite slowly.