I feel Min Jin-soo is not convincing

For me, Min Jin-soo's work in On the Line (2021) is easy to talk about after watching. Many moments pass very fast, and I do not remember much after them. For me, it does not feel very real in many scenes. I do not hate it, but it did not pull me into the story. Some emotions are too simple, and I cannot believe the character enough. Maybe other people will like it more, but this is my feeling.