YOU SAID:

Hello there, everybody has no idea what they are doing here, do they? What are we doing here?

INTO JAPANESE

こんにちは、誰もが彼らがここで何をしているのか分かりませんよね?ここで何をしていますか。

BACK INTO ENGLISH

Hi, no one knows what they're doing here, right? What are you doing here?

INTO JAPANESE

こんにちは、誰も彼らがここで何をしているのか分からないでしょ?ここで何をしていますか。

BACK INTO ENGLISH

Hi, no one knows what they're doing here, right? What are you doing here?