YOU SAID:

I will never be satisfied

INTO JAPANESE

私は決して満足します。

BACK INTO ENGLISH

I was never satisfied.

INTO JAPANESE

満足ではなかった。

BACK INTO ENGLISH

Was not satisfactory.

INTO JAPANESE

はかばかしくなかった。

BACK INTO ENGLISH

Not satisfactory.

INTO JAPANESE

物足りない。

BACK INTO ENGLISH

Not satisfactory.