Yandex glued all regional subdomains, how to overcome?

Question

Search Engine Optimization

There is a website, let's say mysite.com, it has 80 subdomains like ufa.mysite.com, tver.mysite.com, barnaul.mysite.com.
Now Yandex has glued all subdomains into one site and made mysite.com the main one.
Each site had its own sitemap and robots, with unique links.
But apparently Yandex did not like that the content has only a slight difference in the regions.
How to divide the site with less effort, without rewriting articles 80 times for each region?

Answer 1

without creating different content, definitely not.
and already creating different content, most likely you will not post anything.
you can say thank you that everyone was not banned, in general, they got off very gently.

Answer 2

Are phone numbers and addresses unique on all domains? It’s unlikely that there will be a gluing only on content, but all the same, different content is important.

Answer 3

Contacts are different and webmasters all left different regions?