YOU SAID:

Someone's not daaaancing.

INTO JAPANESE

誰かが大騒ぎしていない。

BACK INTO ENGLISH

Someone is not making a fuss.

INTO JAPANESE

誰かが大騒ぎしているわけではありません。

BACK INTO ENGLISH

It's not like anyone is making a fuss.

INTO JAPANESE

誰かが騒いでいるわけではない。

BACK INTO ENGLISH

It's not like anyone is making a fuss.