How can I tell if customers are just using their cart as a wishlist instead of intending to buy?

I've been running my Shopify store for two years now, and lately, I'm noticing something strange. My traffic looks great, and people are adding products to their cart, but our conversion rates are frustratingly low. It feels like customers are treating my cart as some kind of digital wishlist instead of a real purchasing mechanism. I'll see dozens of cart additions every day, but only a tiny fraction actually complete the purchase. This isn't just annoying—it's costing me serious money. Every abandoned cart represents potential revenue slipping through my fingers, and with rising ad costs, I can't afford to have shoppers just 'window shopping' online. I've tried generic exit-intent popups and discount codes, but nothing seems to truly convert these hesitant browsers. I need a way to understand what's happening in those critical moments between cart addition and checkout, and more importantly, a strategy to nudge these potential customers towards actually completing their purchase.