Commercial Air Conditioners Why Don't They Put Parachute Onto A Commercial Air Plane?

Why don't they put parachute onto a commercial air plane? - commercial air conditioners

I know this is not possible for passengers to use parachutes, but how would it open with a parachute into the air in the plane itself?

When an engine during a flight over the ocean, not the pilot parachute is activated and a soft landing on the surface of the sea?

Primarily commercial aircraft in the air high, so I think we should have enough time to open a parachute to slow down and have the descent of the aircraft.