Keywords can help you write a good article. But if you do not understand the topic, then this will be meaningless. By describing only keywords, even automatic content generators can print text (articleforge, content-edge etc).

1) Look at the report in google serch console. Perhaps you have less informative content on the pages. 2) Look from the side: is the content on those pages really useful or just for quantity? 3) There may be problems with the server and it was not accessible when the Googlebot walked through the pages. 4) As for links - perhaps they were deleted from them if they were spam or webmasters removed them. P.S. As the last commentator said. It’s hard to judge something you don’t see.

I forgot to say. Check the sitemap. Everyone should have his own.

As I understand it, you want to connect 2 sites. 1 of them is a mirror or drop. For everything to go quickly and well, the content of the sites must match. Google search console has the ability to reindex the site. Periodically send multiple pages of the site.

Many thanks. Are courses free with a promotional code?