Review Detail of Saarlink in The Land Of Beast Taming : My Pet Can Revert

I like these kinds of novels but this one is bad. The story and world is too simple. MC explores the wilderness with a low tier beast and conveniently ONLY finds poison type beasts. His beast just so happens to be immune to poison. Did he look at a map to find them? Did he avoid others? Just has really good luck? Who know the author just treats it like nothing. The whole book so far is like this. Characters aren't described, the world is too bland, etc.