I think most of my favorite fiction works actually tend to address that directly!! Either has a major theme or as an element of background.
Usually without as much complexity as real life; but still having a stories be aware that things are complicated, do not fit the easy mental configurations we put them in (including narrative roles) and that people are filled with contradictions. In particular deconstruction or subversion of simplistic manicheist morality is often what draws me into a fandom (either because the work does something interesting in its exploration of the cost and impact of heroism -- Tokyo Babylon, Revolutionary Girl Utena, Tales of Symphonia, Mo Dao Zu Shi and Heaven’s Official Blessing) or because they have interesting or sympathetic villainous, anti-villainous/anti-heroic characters (too many to mention them all)). That’s kind of only one specific axis of complexity though.
In the end fiction can only be a representation of the world and as always the map is not the territory (even if we assume that fiction was meant to represent reality accurately which it often isn’t).
I think contradictory is especially one that’s hard to really hold on outside of the context of very psychologically realistic fiction (which, tbh, i’m not usually interested in), because the sort of contradictions real people have could break the suspension of disbelief of the audience XD The “reality is unrealistic” problem.
