"Properly size images" PageSpeed insights woocommerce product thumbnials

This is my product page: https://www.forestsuperfoods.com.au/product/australian-coffee-australian-lions-mane-2/

Here is my pagespeed insights results: https://pagespeed.web.dev/report?url=https%3A%2F%2Fwww.forestsuperfoods.com.au%2Fproduct%2Faustralian-coffee-australian-lions-mane-2%2F

Please help me to fix the "properly size images" issue for the product thumbnails