Hi there ??
If you navigate to Products → Categories in your site’s admin area, you’ll find an option to add a description and upload a thumbnail for each category you click Edit on.
Whether or not a category’s description/thumbnail display on the front end of your site depends on your theme’s code. I’m not aware of any plugin that will specifically do what you need here, so believe custom code is your best bet.
If you’re comfortable experimenting with custom code, the following documents contain snippets that will help you to achieve your end goal here:
Also, you can create a specific template for a specific category using taxonomy-product_cat.php
template. You can see more info here:
https://docs.woocommerce.com/document/template-structure/
However, you can also use the product’s shortcode to display specific categories on any page that you create. And from there, you can add banners, texts, or anything that you would like to that page. Here is a link to the WooCommerce shortcodes:
https://docs.woocommerce.com/document/woocommerce-shortcodes/
I hope that helps!