Place it near the end of an edit, after the moment of defeat or the final argument, so it works as the closing statement. Open that sequence with the Law and Order Dun Dun sound for a dramatic pause, then let this clip deliver the decision, and finish with the DJ Airhorn sound to underline the walk-off.
About this sound
This is a 52-second Portuguese voice clip of a woman announcing that she is quitting the game, saying she is very happy with her decision, is not acting on emotion, and thanking everyone. Her relieved, defiant tone makes it feel triumphant and final rather than sad, like a clean break made on her own terms. It comes from the Brazilian reality show A Fazenda.