Subcategories visible already in the store page

It is very important for me to display not products, but subcategories on the store page. Generally, when moving around the store, I want to display subcategories before the products appear, because I have a lot of products in the store and they are not readable when browsing if you do not use subcategories.

For individual categories, I found how to set it in the settings and I managed to set it: https://i.snipboard.io/SDWcpg.jpg

Please let me know how I can set this also on store page before selecting any category, so that instead of the list of products, individual categories will be displayed here: https://i.snipboard.io/SR1vIz.jpg