Put it in the middle of an edit, after the first position is established and before the final choice, so the change of mind becomes the turning point. Follow it with Okay Let's Go once a decision is made, or with Nope when the speaker rejects the second side outright.
Über diesen Sound
This 17-second spoken clip presents two opposing sides of one idea in a single voice, letting the contrast carry the point without extra sound. It feels tense and unsettled, as if the speaker is arguing with themself and cannot settle on one side. The direct back-and-forth makes it work as a short, pointed reaction to indecision or a change of mind.