YOU SAID:

I'm not a furry but my brother is what a loser.

INTO JAPANESE

私は毛皮ではありませんが、弟は負け犬です。

BACK INTO ENGLISH

I'm not fur, but my brother is a loser.

INTO JAPANESE

私は毛皮ではありませんが、兄は敗者です。

BACK INTO ENGLISH

I am not fur, but my brother is a loser.

INTO JAPANESE

私は毛皮ではありませんが、私の兄弟は敗者です。

BACK INTO ENGLISH

I am not fur, but my brother is a loser.