Place it right after the mistake lands in your edit, before the reaction shot cuts in. Lead in with the wrong answer game show sound for the blunder, follow this apology, then close with Nelson's Ha-Ha! for the teasing response from everyone else.
关于此声音
This is a spoken Russian voice clip lasting about ten seconds, delivering the phrase primi izvineniya, meaning accept my apologies. The delivery feels sheepish and sincere, with a slightly dramatic weight that turns a simple sorry into a bigger moment, useful when a plain apology does not feel like enough on its own.