YOU SAID:
I need to do something that is not very wrong by any means but not really necessary
INTO JAPANESE
私は決してそれほど間違っていないが本当に必要ではない何かをする必要があります
BACK INTO ENGLISH
I have to do something that is never so wrong but not really necessary
INTO JAPANESE
私は決してそんなに間違っていないが本当に必要ではない何かをしなければなりません
BACK INTO ENGLISH
I have to do something that is never so wrong but not really necessary
That didn't even make that much sense in English.