I thought I wasn't getting enough fibre even though I ate heaps of veges but it turned out to be because I was eating the wrong fruits and veges. I have problems with frutose, fructans and sorbitol malabsorption so I'm mostly following a low FODMAP diet. Cutting out onion made the biggest difference.
I saw a dietitian and she said my fibre intake was fine, but the symptoms from these malabsorption issues can make you think you aren't getting enough.
I have been on the FODMAP diet for a week and my bowels have really improved along with my symptoms. The medical professional that put me on the diet said that I won’t have to worry about them even though I have constipation usually. They were right.