Thank you for sharing your experience. I was also on the carnivore diet for many months as I was a proponent of the keto diet. Keto + carnivore managed to reverse my borderline obesity when I was young.
So, I do think it's plausible this kind of diet may somehow reset the body's defective system, be it the gut microbiome, or simply eliminating pathogenic microbes or food sensitivities.
Now that I am fitter, I returned to the normal diet though. I am a competitive athlete, so I need the carbs for explosive strength.