Im giving all my points for this please i have been working on it all day

I'll only answer the ones I know, if someone knows the rest I didn't answer, they can comment under this answer

Idiom #1.2

"so dedicated to his craft"

Meaning: He is dedicated to get into the basketball team

Idiom #2.1 (you got this one wrong)

"Everyone in the class was in the same boat"

Meaning: Everyone is in a similar situation

Idiom #2.2

"The class let out a collective sigh of relief"

Meaning: Everyone was relieved

Idiom #3.1

"Everyone in Athens thought that the home team had the game in the bag"

Meaning: Everyone was assured of success

Idiom #4.2

"He felt like a fish out of water"

Meaning: He does not feel comfortable or relaxed because he is in an unusual or unfamiliar situation

That's all I know, I hope this helped you ;)

the black night was split open like the coconut

it says that it was totally black in the mind of a person but suddenly his mind opened like a coconut with the sweetness of the coconut water and the white color inside it.

or

the black night was thrown like a coconut and it slit apart with its sweet water coming out .