A movie where the main character goes crazy/has a freak out because they don't get something that they want?

Think along the lines of Black Swan, Gone Girl, or Sick of Myself — movies where the main character exhibits narcissistic, attention-seeking, or generally manipulative and troubling behaviors. The focus is on a flawed, self-centered protagonist who is often blind to their own toxicity and willing to go to unsettling lengths for validation or control. Thanks!