Did they seriously not mention Fred's death??? That's like so important to the plot!

This is so hard to chose!

I want Fred's death, Wormy's death, Dumbledore's full backstory, I want them all!

Fred still does in the movie. You just don’t see it happen. His family still mourns over his corpse in the great hall.

Yes, but that's in the background. It doesn't really get explained in the movie.