nobody wants to hear this but the carnivore diet is an elimination diet. it is not sustainable in the long run because among other things your microbiome needs plant fiber

The only problem is that plants can cause all kinds of issues due to their chemical self defense systems among other things, so you need to introduce each one slowly and in its proper state, to figure out which ones you can tolerate and which ones you cant.

A good rule of thumb is fermented plants. They are like a life hack. Increased shelf life, increased benefecial bacteria, and a breakdown of the toxic compounds or the compounds you are just allergic to in most cases. But thats not all. But i dont want to bore anyone further. Have a nice day