How do I create actionable abandonment reports?

As a Shopify store owner, cart abandonment has been my silent revenue killer. I'm spending thousands on ads, driving traffic that looks promising, but something breaks down at the cart stage. My analytics show roughly 70% of visitors add products to their cart, yet only 20% complete the purchase. It's maddening—I can see potential revenue slipping away, but I've struggled to understand why. Are customers getting cold feet? Are there hidden friction points in my checkout process? I've tried generic pop-ups and basic retargeting, but nothing moves the needle consistently. I need a systematic way to not just track abandonment, but truly understand the behavioral patterns causing shoppers to bail. More than just a report, I want actionable insights that help me diagnose and fix conversion bottlenecks. I'm looking for a solution that doesn't just show me numbers, but provides a clear roadmap to recover lost sales and optimize my entire purchase funnel.