YOU SAID:

Twitch has no idea what they're doing.

INTO JAPANESE

ツイッチは彼らが何をしているのか分かりません。

BACK INTO ENGLISH

Twitch does not know what they are doing.

INTO JAPANESE

ツイッチは、彼らが何をしているのか分からない。

BACK INTO ENGLISH

Twitch does not know what they are doing.