YOU SAID:

this is a very complex thing to say what am I doing I don't know.

INTO JAPANESE

これは、私が何をしているのかわからないということを言うのは非常に複雑なことです。

BACK INTO ENGLISH

It's very complicated to say that I don't know what I'm doing.

INTO JAPANESE

自分が何をしているのかわからないと言うのは非常に複雑です。

BACK INTO ENGLISH

It's very complicated to say that you don't know what you're doing.

INTO JAPANESE

自分が何をしているのかわからないと言うのは非常に複雑です。

BACK INTO ENGLISH

It's very complicated to say that you don't know what you're doing.