Movies where the main character just wanders off at the end?

I re-watched Modern Times recently, and a little while later I realized it has the same ending as Dumb and Dumber, where the main character didn't really resolve the main issue and just sets off down the road. I know it's a trope with westerns 'rode off into the sunset' but I feel like stereotypically the hero has achieved his quest or whatever. Are there examples where the situation is largely unresolved. I feel like The Graduate is close to this, but really the whole movie is him just realizing what he doesn't want, and in the end he does get resolution, even though it doesn't leave him anywhere stable.