Being south korean myself, I need to say that "안녕하세요," is only when you say "hello" to elders, and people older than you. You say "안녕" to people who are younger or the same age.
Yes! 안녕 is the most informal, 안녕하새요 is the standart and 안녕하십니까 is the most formal. The ending is different from the formal "ㅂ니다" because in the formal form, to ask a question you must change the ending to "ㅂ니까" accordingly
Is there a way to actually have a one to one chat here..?
Cause i recieved a msg in my notifications but i couldnt actually view it or reply to it,so can someone pls tell me how it works..?
Thank you