YOU SAID:

People who are lying to you tend to look up and to the left (their left).

INTO JAPANESE

あなたに嘘をついている人は、上を向いて左（彼らの左）を見る傾向があります。

BACK INTO ENGLISH

People who lie to you tend to look up and look to the left (their left).

INTO JAPANESE

あなたに嘘をついている人は、見上げて左を見る傾向があります（彼らの左）。

BACK INTO ENGLISH

People who lie to you tend to look up and look to the left (their left).