Yeah, I understand. I feel the same. That’s actually why I wish that JKR would write a novel rather than just publish the screenplay of Fantastic Beasts. What I love about the Harry Potter books is the world and the characters that JKR created. The books are full of so many wonderful things that might not be overly important for the story itself, but make the world so much more interesting. That’s why I prefer the books rather than the movies and why I was not very interested in Fantastic Beasts originally (until I saw Percival Graves in the trailers that is *lol*). A 2 hour movie has to focus too much on the main story to go into all the little details. However, these details are what made me fall in love with the world and I really wish that at least some of them had been addressed in the movie like the wizard/muggle relations or Grindelwald using Polyjuice Potion and that I wouldn’t have to rely on various snippets of information I find on the internet or have to make up myself to fill the gaps.