2018 LEXUS ES350 Structurebody Problems

I WAS AT A STOPLIGHT AND THERE WERE A COUPLE VEHICLES IN FRONT OF ME. THE LIGHT WAS RED. I WAS A CAR LENGTH AND A HALF AWAY FROM THE VEHICLE DIRECTLY IN FRONT OF ME. AS SOON AS THE LIGHT TURNED GREEN, I SAW THE VEHICLES IN FRONT OF THE VEHICLE DIRECTLY IN FRONT OF ME PROCEED TO MOVE FORWARD, AND THE DRIVER IN FRONT OF ME TOOK HIS FOOT OFF OF HIS BRAKES, SO I THOUGHT HE WAS MOVING FORWARD AS WELL. SO THEN I DECIDED TO ACCELERATE TO ABOUT 5-10 MPH. BY THE TIME I REALIZED THE VEHICLE IN FRONT OF ME WASN'T MOVING FORWARD, MY CAR HIT HIS TRAIL-HITCH" (NOT HIS BACK BUMPER) AND THE FRONT OF MY CAR WAS DAMAGED, BUT I COULD DRIVE IT FROM THE SCENE OF THE ACCIDENT. THE BRAKE ASSIST OF MY 2018 LEXUS ES350 DID NOT ENGAGE. I THINK THE...