Place it immediately after the failed moment in your edit, then follow with the sad violin for a mock-tragic ending. Put the wrong answer sting just before it to set up the flop, and save Nelson's laugh for a later miss so the reactions stay separate.
关于此声音
This 3.5-second clip is a single drawn-out vocal boo from João, a low groaning 'buuhhhh' that stretches out instead of snapping off. It feels playfully disappointed and mockingly unimpressed, like a crowd groan squeezed into one voice, and it lands as funny rather than harsh, perfect for a flop that deserves a theatrical sigh.