How to say "Why do I try?" in korean I saw that to try something is ____ 보다, so is it correct to say " 왜 해 보다?" Also how is the correct way of using adjectives to describe someone in the third person? For example, would "He is so sweet" become "그 너무 달콤해"? 감사합니다 :)

What would be an exact translation of 날 갖고 노는 거야 ? If you could explain me what each word means individually that would be great! I tried to google them one by one but the results were confusing! Thank you!