Everyone tries to fly safely but Nepal is perhaps the most challenging place to fly. Flying through mountain valleys into short strips with no prospect of a go around may be scenic but unpredictable mountain weather which can change in minutes can bite even the best pilots.
Random wind changes including mountain rotors and sudden downdrafts on approach can spoil the best of plans.
If you think Nepal's aviation safety is bad just take a look at the roads, it is far safer to fly despite the regular accidents.