YOU SAID:

Go away already I don't have to be there at the same time as you need to

INTO JAPANESE

もう去る必要があると同時に私はそこにいる必要はありません

BACK INTO ENGLISH

I do not have to be there as I need to leave anymore

INTO JAPANESE

私はもう去る必要があるので私はそこにいる必要はありません

BACK INTO ENGLISH

I do not have to be there because I need to leave

INTO JAPANESE

私が去る必要があるので私はそこにいる必要はありません

BACK INTO ENGLISH

I need not be there because I need to leave

INTO JAPANESE

私が去る必要があるので私はそこにいる必要はない

BACK INTO ENGLISH

I need not be there because I need to leave