Brake Sensor problems of the 2018 Tesla Model 3

We recently got into an sua with our current Tesla 3. I was turning into my drive way and I came to a complete stop. While I was waiting for the gate to open and when I braked, the car suddenly sped up very fast and I stepped on the brake again but the car did not stop. The car was also in hold mode when I later checked I never stepped down on the accelerator hard enough to reach the speed of running through 2 cemented metal gates. The airbags didn't pop out and Tesla's sensor break system also did not activate. I also believe that there was an issue with the computer system of my car a short while after I purchased my car (April 18, 2018). I was driving back home when the display screen was stuck on the park mode for the whole entire drive back. I couldn't turn on my signals, or see my mph. Even after I got home, it wouldn't turn off even after trying for 2 hours so I had to call roadside assistance and she told me a way to reset the car. ( I have videos to prove this. ) there have also been incidents when I am braked and waiting at a red light. I obviously pressed accel when the light turned green, but the car went into park mode and I would get startled and quickly manually turn it into drive mode. This has happened approximately 4-5 times in the past year and even recently in 2021.

My Tesla Model 3 has a defect with autopilot sensors and sound. When on autopilot (adaptive cruise control), the sensors can sometimes freeze up and or fail, causing autopilot to cease functioning and issue an audio alert. However, system sound (blinkers, notification alert system) sometimes fails, thus preventing the autopilot from alerting the driver that it will no longer be breaking and or steering. For example, I am driving using the autopilot cruise control, which is supposed to steer /brake/accelerate for me and instructed to keep eyes on the road, however, when the autopilot stops working as well as the audio notification, the driver will not know that it has failed and the car no longer brakes, thus making it likely to have a collision. I have recorded the flaws and defects and have it on video. This can happen anywhere, on highway or on a regular road. Tesla has been unable to fix the problem.