Given scene/plot descriptions from movies or TV shows, and given a specific question about the scene, summarize the question into a title

In The Commuter (2018), the train driver just died. Michael wants to detach the last rail car from a moving train. Sam, the conductor, is already on the last rail car where all the passengers have boarded. He says:    "Between the train and the people, I always knew it would be the  train"   and then jumps onto a moving train to get rid of a chain, which happens to be  stuck between two carts, aiding Michael, who had already been trying.  What is the meaning of Sam's words?
What is the meaning of Sam's words?

About 5 minutes into 'The Fellowship of the Ring', we see Déagol picking up the Ring from the bottom of the swamp where Isildur died, and the narrator says     The ring came to the creature Gollum.    But doesn't Gollum only exist after Sméagol has been corrupted by the Ring? Or was he corrupted before he got the ring?
Why does the narrator say 'The ring came to the creature Gollum'?

In Sherlock season 4, episode 3: "The Final Problem" why does Eurus want to torture Sherlock? What is her motive?  It is revealed that as children, Sherlock had redbeard as a friend. She wanted to be a part of it but that does not happen. She kills redbeard. But she does not do anything to Sherlock. That suggested to me that was the end of her revenge. Why does she want to torture Sherlock after 20+ years then?

What is Eurus's motive in the final problem

