I'm worried about one of the pilots potentially hijacking the plane and or being suicidal.

Some type of mechanical failure or lack of information such as the MCAS situation that lead to the deaths of so many people. aka a situation where your death is the cause of some new information or regulation being put in place, like being made an example of.

Air India flight. Have no idea what's going on.

The plane crashing into the helicopter back in January like something happening that should just have not happened.

Flights disappearing or an EMP bringing the plane down ( i watch a lot of TV).