Account executive interviews are about how you run a deal, not how charming you are in the first minute. A manager wants to hear the buyer, the problem, the people who had to say yes, the moment the deal stalled, and what you did besides sending another note.
Keep a win, a loss, and a deal that slipped a quarter. For each, know the champion, the economic buyer if you met them, the objection that mattered, and the next step you left with. If a manager or an engineer saved the deal, say that. Taking credit for a team win you only scheduled is a fast way to fail a later round.
Practice the loss until you can tell it without flinching or blaming the product for everything.