YOU SAID:

I wish I would have known that wasn't me

INTO JAPANESE

私ではないことを知っていたらいいのに

BACK INTO ENGLISH

I wish I knew it was not me

INTO JAPANESE

私ではないことを知っていたら

BACK INTO ENGLISH

If I knew that it was not me

INTO JAPANESE

私ではないことを私が知っていたら

BACK INTO ENGLISH

If I knew that it was not me