2018 Tesla Model 3 air bags problems

I was at a stop at a red light and was rear-ended christmas eve night, causing my car to be pushed into the vehicle in front of me at the red light. I remember my abdomen hitting the steering wheel and complaining of stomach discomfort immediately following the accident (I've since gotten x-rays and will need 12+ months of chiropractor therapy). I noticed a burning smell inside the cabin, similar to the smell after firing a pistol. I figured it was the airbag, however, there was no deployment of an airbag.

I was driving on auto pilot mode when I was going to make a right hand turn when in order to slow down at the traffic ahead of me, I applied the brakes but there was no brake action whatsoever. This was not a panic situation, it was just normal braking. When the brakes failed to actuate and the vehicle accordingly wasn't slowing down, in order to avoid hitting pedestrians or the vehicle in front of me, I swerved to the right and ended up hitting a tree.