Place it as the closing reaction after the mistake is already on screen, then follow a beat later with the faaaa meme sound button for a second voice piling on, or swap in the fahhhhh sound button if you want the same beat repeated by another character in the edit.
關於此聲音
A stretched-out vocal exclamation spelling out fuchhhhh, held for about six and a half seconds as a single frustrated release. It lands as exasperated and darkly funny, the sound of someone hitting a minor disaster, losing patience, and letting the annoyance drag out longer than the moment deserves.