My team recently conducted a "post-mortem" analysis of our recent milestone performance. There are lots of ways to conduct and publish PMs, but we chose to use the SWOT analysis method. SWOT stands for Strengths, Weaknesses, Opportunities, and Threats. You can find a template for applying SWOT to a competitive analysis here.
Read this microsoft.com operations post to get inspired about how using the SWOT methodology can help to start turning things around in your org.