Huh? Just because a movie flops at the box office doesn't necesssarily mean it's bad. There a plenty of examples of movie flops that later became cult classics.
If I remember correctly, Office Space did particularly poorly at the box office but it’s totally a cult classic that I’m sure a good chunk of this community has watched.
Shawshank Redemption is much better example of this IMO... Absolute bomb at the BO that ended up being not just a classic but won like a millions Oscars as well