Assist problems of the 2020 Hyundai Elantra

I rented a 2020 Hyundai Elantra from pittsburgh PA to rockville MD. It was raining. Because the steering wheel was sensitive compared to other cars I had driven, I turned on the car's lane keeping assistance, which tightened the steering wheel a bit and made an alarm sound and steered back by itself when the car got close to a lane line. I drove under the speed limit and exercised all caution necessary on a raining day. On highway 70 east close to hagerstown MD, I noticed the car deviate towards the left on a curve. Lane keeping assist did not alarm. To prevent it from hitting the left divider, I tried to steer back to the right but the steering wheel was locked up. I pressed the brake pedal, but the car did not slow down. The car suddenly slid to the far right, left the highway pavement, rolled over on the lawn. All of the front and side airbags on the driver’s seat and CO-driver’s seat popped out. Smoke was everywhere. I got bruises on my knees and legs, and cuts in left hand and arm. The mileage was 43316 according to the rental company after the incident. I purchased the damage waiver so the rental company did not charge me or provide a report.