how to say this in korean? how do you say "play with fire" in korean? i know a bit of korean but no matter how hard i think the sentence just sounds weird :-( thanks a lot!!!

how to say this in korean? how do i say "as a fan who has loved you from the beginning, i feel very proud of your gradual progress over time" in korean? i'm writing a fanletter to someone hehe :-)

how to say this in korean? does anyone know how to say "from a hyung's perspective, please rank the members according to how obedient they are!" in korean?? doesn't have to be very formal, thanks :-))

how to say this in korean? how do i say "please teach me how to get a high score" in korean? it doesn't have to be very formal :-) thanks in advance ^^

Please help~ How do I say "this is bad" or something along those lines in Korean? I remember always hearing people say something like "글났다" (not sure if my typing is correct) in Korean dramas though... Would really appreciate accurate replies!