French phrase
Ce n'est pas vous, c'est moi.
Meaning
It's not you, it's me.
When to use it
Says the problem is with the speaker, not the other person. Often softens a refusal or criticism and avoids blame.
Example dialogue
Ce n'est pas vous, c'est moi. Je n'aime pas les foules.
It's not you, it's me. I don't like crowds.
D'accord, on y va une autre fois.
Okay, let's go another time.