Collections and Jekyll?

Question

Web development

There is such an organization of the site structure:

site.loc # Root
_artworks # Artworks folder
category1 # Collection category 1
category2 # Collection category 2

I tried to create a collection in this way (this is the _config.yml file, it lies at the root):

title: Vostok Sisters
collections:
artworks:
output: true

Well, in general, nifiga does not work. Although he seemed to pick up the collection correctly, that is, he made an output into the generated site folder (_site) and there was content. But on the page it doesn’t want to display even the names of the collection, such as:

{{site.artworks.label}}

Not to mention pulling out static files from the collection.
As soon as I didn’t google, I didn’t figure out the collections. Can you please tell me how to do it right?
The main goal is to output by the date of creation of images (which lie in the categorical folders of the collections).