Why is there no full indexing in google?

Question

Google

I have a site on cms joomla. Ugly, sometimes crooked, but what it is. There is no mobile version of the site. Yandex normally indexes, but Google does not want to. At the beginning, I indexed only 10 pages for a long time. I made a request for re-indexing - there were 80 pages in the index. But Yandex has 600 pages...
In robot.txt
User-agent: *
Disallow: admin directories, logs, etc. here. (everything according to the standard)
Host: site
Sitemap: map
site_klima-servis.ru
help me figure it out.

Answer 1

Try to add unique descriptions to each product, at a glance - in the description of the goods there are only dry technical characteristics. Need content.