Why doesn't Google index all images on a site?

Question

Search Engine Optimization

Hello) There is a site medalnica dot biz dot ua Tell me
why Google does not index all the pictures of the site, but only one?
I checked this site:medalnica dot biz dot ua in the image search, it shows only one picture, it does not see the others.
Everything is open in the robots, all images are registered in the sitemap (or is it superfluous?)
Can the fact that I have registered the addresses of all images in the sitemap give such a result?
The sitemap is shared, NOT a separate sitemapimages.

Answer 1

normas indexes everything
there are two types of people for promotion in Google: some do it right away AS Google needs, others do it as best they can in order to pay the SEO and redo it like the first