When to use to fail in Korean
Korean: 실패하다[ sil-pae-ha-da ]

When to use it
The word "to fail" (실패하다) means not succeeding in something you tried to do. You can use it for tests, plans, games, work, or simple daily tasks. It often shows that someone tried, but the result was not good.
Example sentences
오늘 시험에 실패했어요.
I failed today's test.
저는 집에서 케이크 만들기에 실패했어요.
I failed to make a cake at home.
그는 밖에서 공을 잡는 데 실패했어요.
He failed to catch the ball outside.
우리는 역에서 표를 사는 데 실패했어요.
We failed to buy tickets at the station.
저는 여행 중 길 찾기에 실패했어요.
I failed to find the way during the trip.
저는 선생님 질문에 답하는 데 실패했어요.
I failed to answer the teacher's question.