One is an external part, and the other is a body reinforcement. If your bumper is damaged and you think it's badly installed, I suggest you take it down and look at the inner bone of a bumper with your eyes. If it is deformed, see if the frame is biased to one side. Deformation invisible to the eyes will not affect the performance of your car. Just go to the plastic table and correct it.
I hope I can help you.