A poster back on the first page recommended reading about films on IMDB (Internet Movie Data Base). That has actually been my home page since about 2003. I enjoy rating films and I have over 2500 rated so far.
Generally I won't pay to go to the theater to see a film rated lower than a 7.0, "Fifty Shades of Black" has a 3.3 rating and in it's opening week took in less than $6 million dollars. Those two numbers alone should tell you to stay away. Here is a link
IMDB Home Page A 3.3 is about as low as any new release can get and only $6 million, that screams BUST.
If your group had it's mind set on a comedy, then today using the rating of 7.0 or better, you should of gone to "Hail, Caesar!" It has a 7.5 rating and is made by the Coen Bros. If you're not familiar, they made O'Brother Where Art Thou, Fargo, True Grit, The Big Labowsky, Burn after Reading, No Country for Old Men and Raising Arizona to name a few.