YOU SAID:

You better run and don't look back

INTO JAPANESE

走って振り返らないほうがいい

BACK INTO ENGLISH

You should run and not look back

INTO JAPANESE

あなたは走るべきであり、振り返ってはいけません

BACK INTO ENGLISH

You should run, don't look back

INTO JAPANESE

あなたは走るべきです、振り返らないでください

BACK INTO ENGLISH

You should run, don't look back