I’ve heard people say some books (or genres) are plot-driven and others are character-driven. My POV? This is a fallacy. All good books are character-driven and plot is what makes that possible. Characters have to make us give a hoot about the plot. If we don’t like or empathize with the characters, we don’t care about their problems.
Conversely, plot is the delivery mechanism and crucible for character (even in literary fiction). Characters can only be as strong as the opposition they face. Weak problems=weak characters. In a nutshell, character and plot can’t be easily separated.
For instance, in the Pulitzer-Winning The Road, the plot is simple. Man and Boy must make it to the ocean. Yet, since this piece is literary, the plot goal is subordinate to character goal.
It is less important that Man and Boy make it to the ocean than how they make it to the ocean. The world has been obliterated, killing every living thing other than humans. Many have returned to the animal state, resorting to cannibalism to survive. The question in The Road is less “Will they make it to the ocean?” and more “How will they make it to the ocean?” If they resort to snacking on people, they fail.
But I will say that while plot is great, characters are what (who) we remember. We have to be able to empathize. We want to love them, hate them, root for them and watch them fail, then overcome that failure. As the late Blake Snyder said, “Everybody arcs!”
Often, this is the trick with series and why early books generally are more popular. Once our main character evolves, we are left with three choices: