YOU SAID:
he was so wasted he became trash
INTO JAPANESE
彼はとても無駄になってゴミになった
BACK INTO ENGLISH
He got wasted so much and garbage
INTO JAPANESE
彼はそんなに無駄になってしまった。
BACK INTO ENGLISH
He got so in vain.
INTO JAPANESE
彼は無駄にそうなった。
BACK INTO ENGLISH
He did so in vain.
INTO JAPANESE
彼は無駄にそうしました。
BACK INTO ENGLISH
He did so in vain.
That didn't even make that much sense in English.