400 sessions, no sales

I just launched my Shopify store selling handmade leather goods June 15th, and have since paid $500 into Google and Pinterest Ads for no results. I have gotten two email subscribers, thirty six add to carts, and nineteen reached checkouts, but still no sales. I feel like with numbers like this there has to be something wrong with my checkout processing, but when I tested it with a real debit card, it went through fine. Am I doing something wrong? I can direct message the store URL if anyone is interested in viewing my store. My store URL is in my profile’s about me. Thanks for any help or advice.