Whenever you hear this NPC talking point calmly thank them and ask what “fraud” they would like to acknowledge.
Because “no fraud” and “not enough to overturn the election” are two entirely different things. Play their own word games against them and force them to admit what we all know.
How can they know that there wasn’t enough fraud to overturn the results of the election unless they have conducted a full signature audit in every disputed county? (They can't)