YOU SAID:
You are bad at everything dude
INTO JAPANESE
あなたはすべての男が苦手です
BACK INTO ENGLISH
You are not good at all guys
INTO JAPANESE
あなたはすべての人が得意ではありません
BACK INTO ENGLISH
You are not good at everyone
INTO JAPANESE
あなたはみんなが得意ではありません
BACK INTO ENGLISH
You are not good at everyone
That didn't even make that much sense in English.