It depends on what aspects of the story you're referring to. Some parts might be based on real events, while others could be fictionalized for dramatic effect.
Amsterdam is not based on an actual true story. It's a work of fiction that weaves together different fictional elements to create a unique and engaging plot for the audience.
Amsterdam isn't strictly based on a single true story. The filmmakers likely drew inspiration from multiple sources and combined them to form the narrative. So, it's a blend of imagination and real-world influences.