Reliable
Be reassured by the fact that when you look at mean time between failures... jet engines are some of the most reliable mechanical devices ever made by human beings.
They run for decades in power stations, power ships across oceans.
Thousands of airliners are in the air right now with no risk of them stopping.
They will continue to run (roughly) even after a blade has snapped off (itself a rare event).
They can stand massive ingestions of water without the flame going out; birdstrikes - a high degree of damage, and still function.
The technology involved is amazing.
You should actually be far more worried about the two soft machines sitting in the two front-most seats making a mistake.... aircraft nearly always crash beacuse of brain failure, not plane failure.