YOU SAID:

I would say goodbye, but I don't know any of y'all

INTO JAPANESE

私はさようならを言うだろうが、私はy'allのいずれかを知らない

BACK INTO ENGLISH

I will say good-bye, but I do not know any of y'all

INTO JAPANESE

さようなら、私はあなたのことを知らない

BACK INTO ENGLISH

Goodbye, I do not know about you

INTO JAPANESE

さようなら、私はあなたについて知りません

BACK INTO ENGLISH

Goodbye, I do not know about you