Not enough information provided to give a definitive answer.
The logical progression for this type of problem is
!. Determine if the gun is the problem. With the M&Ps I've shot there has not been a problem finding ammunition to match sight elevation. Windage is easily adjusted by drifting the sights. The easiest way to check sights is have a highly qualified person or 2 to shoot it.
2. In my beginning pistol classes, I frequently find people unaccustomed to the safe-action trigger pulls shooting low and left. In some cases, I have to take the pistol and shoot a group with it to get them to start listening about proper grip and trigger control.

Had a student last month shootin a foot low at 5 yards with a Glock 9mm. Pure trigger control problem. I had the student hold the gun and align the sights while I activated the trigger and it hit dead center. The light came on!