Place it just after the failed moment in the edit, then follow it with Anime Ahh for a shocked reaction, or let Womp Womp Fail close the scene once it has settled.
Über diesen Sound
This four-second clip is Killua's loud, high-pitched AHUEHAUEHUAEUH laugh, delivered in a fast, teasing burst that sounds like he has just caught someone out. It feels mischievous and gleeful, the kind of laugh that makes a joke land harder. It comes from Hunter x Hunter, where Killua is one of the main characters.