Translation of "힘들었어요" in English

그러나 이걸 표현하기가 힘들었어요.

but I struggle to translate.

- 아이가 셋이나 있었는데 - 정말 힘들었어요

- You have three children. - It's hard. It's hard. It's extremely hard.

‎처음에는 ‎물에 들어가기가 힘들었어요 ‎물살이 거세서 수영하기 두렵기로 ‎손꼽히는 바다니까요

In the beginning, it's a hard thing to get in the water. It's one of the wildest, most scary places to swim on the planet.

‎처음에는 상상하기 힘들었어요 ‎문어가 이 관계에 ‎관심을 보일 줄 몰랐죠

It was difficult to imagine at first that she was getting anything out of the relationship.