'니 어데고? 일루 온나" what does it mean?

Please someone help me translate one sentence How to say in Korean "The reason for my participation in the competition of Korean language is my desire and the hope that my work will be interesting and useful to the audience (public)."?

"Today is my birthday. Can u send me "heart" as a gift"? "오빠 오늘은 제 생일인데요. 생일선물로 하트를 보내주면 안되나요?"

how to say in korean "I can't talk with u, cuz my parents are sleeping now"

"짜증이나는구만"은 무슨 뜻인가요??

'계좌불러'는 무슨 뜻인가요?

how to say in korean: "My name difficult to pronounce" 내 이름은 말하는게 어렵거든요!

Its right? "I apologize on behalf of all fans" 나는 모든 팬분들 대신 사과드립니다.

please, check the construction and structure of questions 1. What did the author look out (on ?) from window of his house? 2. What was the weather in part of North of Ireland? 3. Did an old retired couple who owned the house live in two rooms or in three rooms? 4.Who did accompanied (?) by walking stick and a small dog? 5. Who never bothered them? 6.Age can be cruel, isn't it? 7. What's fact moved (touched) the author? 8. Did he can hear coughing or crying late into the night?