을 잃고

lose and

→ 을
phrase Common #1,374
lose and The object particle 을 combines with 잃다 (to lose), and -고 links this clause to what follows. Used for losing something, such as a home, life, or one's reason.
KO: 집을 잃고 친척 집에서 살고 있어요.
EN: I lost my home and am living with a relative.

정말 다른 애들을 잃고 싶나?

Do you really want to lose the other kids?

— 아바타: 물의 길 (2022)