Titanic
The scene between Jack and Rose after the Titanic sank is still a hotly debated topic. Just from the one angle we got, it seemed like Rose could have moved over to bring Jack on board with her. There were also tons of other pieces of wood he could have hopped onto... Either way, Jack didn't have to die!
Star Wars Episode IX: The Rise Of Skywalker
Honestly, Palpatine's entire character is just confusing. They try to quickly explain his rise to evil by saying, "The dark side of the Force is a pathway to many abilities some consider to be unnatural." Okay, but how did he harness it that much? Is it really all about power from within? It just seems like there's something missing here...