What attribution model should I use for recovered carts?

As an e-commerce store owner, I've been wrestling with understanding how to properly attribute conversions from recovered carts. My current setup feels like a black box—I know we're recovering sales, but I can't pinpoint exactly which tactics are driving those recoveries. Are my abandoned cart emails working? Is my new Growth Suite timer actually convincing hesitant shoppers? I'm spending money on multiple recovery strategies, but without a clear attribution model, I'm essentially throwing darts in the dark. My team keeps asking me which channels are most effective, and I'm tired of saying 'I'm not sure.' I need a systematic way to understand whether it's the personalized discount, the countdown timer, or the email reminder that's ultimately pushing customers to complete their purchase. The stakes are high—every recovered cart represents direct revenue and improved ROAS. If I can't accurately track what's working, I'm potentially wasting resources and missing opportunities to optimize my conversion strategy.