Everything you've tried is aimed at your colon. Your colon was never the problem.
Fiber is bulk. Bulk needs a working muscle to move it. Add more to a muscle that isn't pushing and it just sits and ferments.
Laxatives force water in until something happens. Then tomorrow you're right back where you started.
Probiotics can't restart a muscle.
Your scope was clean because your colon is fine. Nobody measured how fast your stomach empties.
Water and walking do nothing if food isn't being pushed forward.
Here's what none of it touched.
At the bottom of your stomach there's a muscle. It squeezes a few times a minute and pushes food forward. Strong muscle, stomach empties in 90 minutes. Weak muscle, food sits for hours.
And everything downstream waits. Waste reaches your colon late, after your body has spent hours pulling the water out of it. That's the hard and the dry. That's the days without going.
You were pushing at the wrong end.
Sculptique starts where the problem starts. Ginger 700mg to get the muscle squeezing. Bromelain and papain to break food down so the muscle moves lighter loads. Dandelion and inulin to feed the bacteria that keep your colon moving on its own.
Not more bulk. Not more force. Muscle first.