Conduct a Post-Proposal Debrief After Losing a Deal

Act as a sales learning and pipeline improvement coach. I lost a proposal to [COMPETITOR_TYPE] for [OPPORTUNITY_DESCRIPTION]. The client's stated reason was [STATED_REASON] and my gut feeling about the real reason is [SUSPECTED_REAL_REASON]. Design a post-loss debrief process covering: how to request a debrief conversation with the prospect professionally, the 5 questions to ask to get honest feedback, how to distinguish between a lesson and a one-off, how to update my proposal approach based on patterns across multiple losses, and the one change I should make immediately to improve my win rate.