>Don't Look Up and Henry Cavill's Man of Steel both have 56% and Lucky Number Slevin has 51% on rotten tomatoes

51% means 1% more than half would recommend the movie, not how good it is - man of steel has a 6,2 average rating, which is pretty solid. Metascore is more indicative of rating through quality than RT. But nothing wrong with these movies mentioned? Perfectly fine to enjoy them, as it is any movie. I can't say I like any of them but they're not terrible. Do you look at those movies' rating and go "yeah ok I understand why" Or is it totally a mystery why somebody would dislike or think "meh" of the movies you mentioned?