Air Bag On-off Switch problems of the 2014 Toyota Camry

I was driving during night with lights on at hiway speed and all interior and exterior lights went out while driving 70 mph in pitch black! I had to guess where I was on curved overpass. I tried flicking the hi/low beam switch, but that didn't help. Couldn't get lights to come on until stopped, shut off car and restarted it. Has happened twice since I bought it new. First time was prior to any body damage, second time it wasn't completely pitch black so not as dangerous. Another trip we were on 4 lane interstate driving through a city and someone else had hit an orange construction barrel and it had flipped up into air and we hit it at hiway speed on left front corner of car. Had to replace bumper, headlight, washer fluid tank, repair fender. Air bags never went off. I am an emt and another day was driving to a gunshot call at 80 mph and reached for pager as it was falling and front wheel dropped off shoulder and I knew not to correct it, so just kept straight and came to stop in snow filled ditch. Air bags did not deploy. I had to get it towed out, and the tow truck driver indicated that it was a difficult ditch to get it out of. Had get get it realigned and replace right front headlight, bumper, and some other plastic pieces. Third time we were t-boned at an intersection in town, would estimate less than 30 mph, and air bags did not deploy. Damage was bad enough it was not driveable anymore and insurance company totaled the car out. We bought the car back to repair it to continue driving it, but now I am thinking that was a poor decision as I wonder about the safety of it. The last accident has me very shook up and I am waiting to have surgery on my neck now because of it. I wonder if the side air bags had worked, would I need to have my neck fused.