I do sometimes/often prefer the film even when the book is good (Melville’s Billy Budd Sailor wasn’t as good for me as the film Billy Budd). Obviously there is stuff like Stephen King where I find his books barely readable but the film adaptation can still be excellent.
Or you can get things where the book is fantastic and the film is differently so, for example Arrival. I loved the long short story but it didn’t have Johann Johannson’s sountrack or Amy Adams’s acting for example (though the Chinese politics wasn’t so good in the film). Or Tristram Shandy (no more unfilmable than it was unwritable) done as a Cock and a Bull story.