Place it right after the moment of blame in your edit, so the denial answers the accusation directly. Follow it with the Bruh sound when the excuse falls flat, or cut to Emotional Damage once the group refuses to believe you.
About this sound
This is a short Portuguese voice clip, just under four seconds long, in which a speaker delivers 'não foi eu, não hein' with a teasing lift at the end. The delivery feels light and cheeky, turning a denial into a joke because it sounds deliberately unconvincing. It works as a knowing reaction to being caught or blamed, giving the sense that the speaker is smiling while wriggling out of trouble.