Need better ecommerce fraud protection after empty box return

FBM order for $380 worth of electronics. Customer filed a chargeback saying product was defective. They returned a box with the right tracking number but when I opened it, completely empty. Just packing materials, no product. Submitted photos of the empty return, weight discrepancy from shipping labels, everything.
Lost the dispute because technically they provided a return tracking number. So now they have my products and their money back. Is there any recourse here or did I just fund someone’s free shopping spree?