As m an only movie watcher m curious how many subplots were removed from the movie ? Like we have 4 houses yet in the movie we only talk about Slytherin and Gryffondor, I don’t get it how harry and ginny became a thing they suddenly became interested since the 6th movie, I do intend to read the book, but m curious how deep is the iceberg of the Harry Potter’s lore that we didn’t see on screen.

Thank you in advance for reading my post and taking your time in the answers and I apologize for my uneducatedness regarding the subject m a novice in the Pottermore family