Competitions hmmmm, as a retired police officer, I was told they were bad. However as I gained in age and experience, I learned I had been not told the truth. Law enforcement and civilian's alike can learn things from competitions and competitors. ;ie; mag changes, movement with firearm in hand, how to resolve malfunctions quickly, to transition from one type firearm to the another ie; long gun to handgun and back. These were things that were not taught at the academy or in yearly training until the last 10 years of my employment. The better you handle transition's between weapons, mag change reloads, the better your chance of survival. Your shooting should improve. But you have to invest the time, not the just 40 hrs a year your department requires.
Your time, not anyone else, to get better for the competition you enjoy or for your job. As a LEO, you can pick up some info that can and will help you . You still have to invest the time.