its simple actually
even though im korean i dont want to translate from discrimination of racial comments
basically hes saying when u shoot jump a lot and move around
hes also saying when ur going into nerve think of the map as if your looking from a bird's view or just looking straight down from the sky and think where would they hide?
thirdly take cover and dont try showing ur whole body but at the same time try to aim?
note: i dont want any comments about this comment that i have done so please do not quote about this and say UR ALL WRONG cuss i used a person's point of view of not knowing korean but interpereting from the videos