I feel Jennifer Jobst is not convincing

For me, Jennifer Jobst's work in Widows (2018) is easy to talk about after watching. For me, it does not feel very real in many scenes. Some emotions are too simple, and I cannot believe the character enough. Many moments pass very fast, and I do not remember much after them. I do not hate it, but it did not pull me into the story. The role needs more detail, but the performance stays on the surface. Maybe other people will like it more, but this is my feeling.