Most of these movies are called psychological movies, but searching under this category I have not found anything that comes close to what I am looking for, movies like memento, 12 monkeys and primer are characterized by something, a person who knows information (Be good or bad), and is in a situation isolated from the rest of the population, no one other than the protagonist or a very small group of people knows what is happening and what it implies, that is the type of movies I am looking for, movies with isolated stories, if you know of any movie that makes you feel that I don't know what it is with the 3 movies I mentioned, please leave me the name and synopsis. (I had forgotten to mention donnie darko)
I think a lot of supernatural horror / fantasy fits this description, where the protagonist is experiencing something that nobody else believes. here's some of my favorites
A Nightmare on Elm Street - a group of teens are being murdered in their dreams, and none of the adults believe what is happening. 15 year-old Nancy is the only one to take the threat seriously, and after watching her friends die in their sleep one-by-one, she has to learn to rely on herself to fight back against Freddy Kreuger
Candyman - Helen Lyle, a graduate student researching urban legends, begins to lose her grip on reality when she encounters the Candyman, a mythical serial killer who haunts the Cabrini-Green housing project and is summoned by saying his name 5 times in a mirror
Pan's Labyrinth - a young girl in post-war Spain discovers an underground world of magical creatures and is challenged by a Faun to complete certain tasks in order to escape her fascist environment and ascend to her throne as an immortal princess of a faraway kingdom
Coraline - a girl with neglectful parents moves into a new house where she finds a portal to the "other" world where her "other" parents shower her with love and attention, but it turns out not to be the paradise she first imagined
The Nightmare Before Christmas - Jack Skellington, the Pumpkin King of Halloween Town, accidentally finds a door to Christmas Town, and upon returning home tries desperately to bring the joy of Christmas to his fellow townspeople who don't understand this strange new holiday
okay I just had to include that last one, you gotta admit it fits the description! this was a fun exercise
wait I thought of one that isn't horror related - Groundhog Day - you already know what it's about. and to bring it back to horror, Happy Death Day is like a slasher version of Groundhog Day where a woman has to repeat her birthday over and over until she can figure out how to avoid being murdered