When to use to struggle in Korean
Korean: 고생하다[ go-saeng-ha-da ]

When to use it
고생하다 means to have a hard time or to struggle while doing something. You use it when work, study, travel, or daily life feels difficult and tiring. It can also sound caring when you talk about someone’s hard effort.
Example sentences
엄마는 집에서 청소하느라 고생했어요.
Mom struggled because she had to clean the house.
저는 학교에서 시험 공부하느라 고생했어요.
I struggled studying for a test at school.
어제는 바람이 많이 불어서 밖에서 고생했어요.
Yesterday I struggled outside because it was very windy.
친구와 한국어로 말하느라 조금 고생했어요.
I struggled a little trying to speak in Korean with my friend.
주말에 사람이 많아서 가게에서 고생했어요.
I struggled at the store because it was crowded on the weekend.
여행 중에 길을 잃어서 많이 고생했어요.
I struggled a lot during the trip because I got lost.