YOU SAID:

i think i am not lovely

INTO JAPANESE

私は私は素敵ではないと思います

BACK INTO ENGLISH

I think that I am not nice.

INTO JAPANESE

私は良くないと思います。

BACK INTO ENGLISH

I think that is not good.

INTO JAPANESE

それは良くないと思います。

BACK INTO ENGLISH

I think that is not good.