https://en.wikipedia.org/wiki/David_Deutsch#The_Fabric_of_Reality
https://www.daviddeutsch.org.uk/books/the-fabric-of-reality
https://en.wikipedia.org/wiki/Temporal_paradox#Parallel_universes
In The_Time_Machine_(2002_film) the protagonist is unable to stop the death of his fiancee. Like certain things are set or unpreventable. https://en.wikipedia.org/wiki/The_Time_Machine_(2002_film)#Plot
https://en.wikipedia.org/wiki/12_Monkeys#Plot https://en.wikipedia.org/wiki/Looper_(film)#Plot
https://tubitv.com/movies/100039579/looper , https://tubitv.com/movies/505800/synchronicity
https://thedigitallabyrinth.blogspot.com/search?q=Time+Travel+and+Synchronicity