I recommend Wear It Quickly: The Sick Male Supporting Actor Has Fallen Again. This novel is very similar to the plot described in the question. The female lead, Min Rou, was a staff member of the Space Administration. She failed a mission because of the blackened male lead. After that, she was sent back to the previous mission world to help the blackened male lead complete the mission again. I hope you like this fairy's recommendation. Muah ~😗