Place it at the reaction beat right after the on-screen fail, then follow it with the Roblox Oof for the defeat itself. If the scene needs a build, lead in with No God Please No and let this clip close the sequence as the final reaction.
このサウンドについて
This is a short clip of about one and a half seconds where Cesus lets out a train-like ahh after getting ultra pissed. It feels funny and tense at the same time, turning a flash of ordinary frustration into cartoon-level rage that listeners recognise as a reaction rather than a real outburst.