The King of Criminal Investigation: Reborn with a Crime-Solving System

It's a bit outrageous that the protagonist can restore a plant that hasn't been found in ten years using the system. And the protagonist relies entirely on the system to solve the case. Didn't the protagonist read so many clues before his rebirth? Why is it useless after rebirth? It all depends on the system. And the protagonist doesn't know about this ghost. When he is about to be killed, the logic of talking about his father's case is a bit unreasonable.