Why don’t they give parachutes to the passengers?
This sounds strange, but a parachute will most likely not save your life if the plane starts to fall. Even in a calm situation, most people can’t put one on correctly and land safely. And in order to jump out of a plane and not get hurt, an aircraft should fly slowly and not higher than 16,000 feet.
But there are some passengers that take parachutes as carry-on luggage. You can follow suit, but you should know that a parachute costs as much as a good car.