Place it right after the mishap in the edit, then follow it with Bruh for a flat disbelief beat before Emotional Damage Meme Sound raises the reaction for a bigger fail.
關於此聲音
This is a single stretched “aduhh” in a high, childlike cartoon voice, lasting under two seconds. The sound feels like a soft wince at a small mishap, funny and awkward instead of painful, and it makes a minor fail feel instantly relatable. It comes from Upin & Ipin, the Malaysian animated series, where the line marks moments that go mildly wrong.