Do you use "보고싶었어요" if you want to say you miss something that someone does? I know that "보고싶었어요" is said if you missed someone, but what about if you miss certain actions that someone does? For example, if I wanted to say "I've missed seeing your artwork" or "I missed my train", would I still be able to use 보고싶었어요? Also, for present tense (for example, "I miss my mother's cooking") would I be able to use "보고싶어요"? Would it be possible to know these sentences in informal & formal please? I hope my question was clear... Thank you :)

슬퍼요! 요즘은 마음이 많이 슬퍼요... 너무 슬프고 스트레스 울고싶어요 ㅠㅠㅠ

Introduction (in 반말) I'm very familiar with introducing myself formally, but is this how would I do it informally? 안녕! 내 이름은 나비고 88년태어났어. 원예 좋아해 그리고... 나 부끄러워 사람이야.

Proper usage of 들? I want to make sure that I am using 들 properly since I am a little confused about when to include it. For example in "서점에는 다섯 사람들이 있다", using 들 would be incorrect and "서점에는 다섯 사람이 있다" would be more proper? Using 들 is more for describing nouns as a group such as in "서점에는 많은 사람들이 있다" correct? I hope I was able to explain it clearly, I apologize in advance. Thank you very much!

How to say this in Korean? Hi, I would like to know how to say: "I feel very exhausted and sad lately. Why do I feel like this? Maybe I need more sleep" please? in formal & informal, if possible. Thank you :)

행복하지 않아요 오늘은 나쁜 하루. 나의 고모가 병원에 있어요... 난 너무 슬퍼요 :'( 고모, 얼른 나으세요.