When searching for a tv show or movie, don’t require special characters. For example, when searching for it’s always sunny in Philadelphia, if I don’t include the ‘ in the search the search fails.
I just tried it on the Mac version and it worked fine for both the tv series “12 O’Clock High” using “12 oclock high” as the search term and the movie “Alice’s Restaurant” using “alices restaurant”.
I’m not sure what would cause it to not work for you. Are you by chance using a server like Plex or Jellyfin?