While other authors just keep shy of equations and thus need to resort to simplified analogies, Carroll is not afraid of throwing a good share of math stuff and explaining the rationale from one equation to the other, while avoiding the really hard parts ("solving this equation tortures undergrad physics students for a year, but we won't be doing that")
Two recent popular books about QFT are:
Matt Strassler’s Waves in an Impossible Sea (no math, just hand-wavy analogies): https://www.amazon.com/dp/B0CB3LZXR9/
Sean Carroll’s Quanta and Fields (tries to give you a basic understanding of the actual math): https://www.amazon.com/dp/0593186605/