Optimize my Amazon e-commerce storefront on my Wordpress site

Need someone who is familiar with using content egg & Amazon storefronts on Wordpress

My online grocery e-commerce marketplace is made to help people that fellow specific diets to be able to follow them and find foods that work for their diet easily in one place. All products or products that have been found on Amazon
The categories are all for different diet based foods
- keto diet
- gluten free
- low fodmap

I would like for under each diet to have sub categories or the different aisles (check grocery tab > by aisle)

I would also like for the products to be cleaned up a bit, and for anything that does not have any photos on it, reconnecting that Amazon product to the store to ensure the photo is uploaded.

Also any website page design fixes would be great ! To optimize user flow.

Thank you!

Website links:
https://dietingwell.com/product-category/low-fodmap/
https://dietingwell.com/product-category/keto
https://dietingwell.com/product-category/gluten-free/
https://dietingwell.com/product-category/groceries/sugar-free/