The job of the first chapter
A first chapter has four simultaneous obligations: introduce a protagonist the reader will follow, establish the genre and tonal contract, create one central question the reader needs answered, and be good enough to justify continuing. Most first-chapter failures collapse into one of two patterns. The first is too slow: extended scene-setting, weather descriptions, backstory, and world-building that postpone the story. The second is too sudden: kinetic action that has no emotional anchor because the reader does not yet care about the person at the center of it. The fix for both is the same: begin in a specific scene, in motion, with a specific person doing a specific thing that already tells the reader something true about who this protagonist is.