IWP Swatches (Formerly Known as WooCommerce Variation Swatches & Product Gallery) is your All in one solution to customize WooCommerce Product page.
Demo: https://codecanyon.net/item/woocommerce-additional-variation-swatches-and-images-pro/30391935
WooCommerce comes with a basic option to insert a single image for a product variant.
Demo: https://getwooplugins.com/plugins/woocommerce-variation-gallery/