How do I handle multiple abandoned carts from the same customer?

I'm running a fashion e-commerce store, and I'm losing my mind over abandoned carts. Every week, I see the same customers adding products to their cart, only to disappear without purchasing. It's like they're window shopping online, and it's killing my conversion rates. I've tried generic email reminders, but they feel impersonal and rarely work. My ad spend is already high, and these abandoned carts are eating into my potential revenue. I need a strategy that doesn't just remind customers but actually motivates them to complete their purchase. I want something smart—a way to understand why they're hesitating and offer the right incentive at the right moment. It can't be a one-size-fits-all approach; each customer is different. Some might need a small discount, others might need more product information. And I definitely don't want to annoy my customers with constant, pushy messages. I'm looking for a sophisticated, data-driven approach that feels personalized and creates genuine urgency without looking desperate.