Why is the page ranking poorly?

Question

Search Engine Optimization

For example, there are a number of pages like doctu.ru/consult or doctu.ru/consult/stomatolog or doctu.ru/consult/psikhoterapevt that rank very poorly for targeted queries of the "online dentist consultation (free)" format, although other similar pages for targeted requests are often on the first page or on the second maximum.
The section of online consultations on the site is already about 1 year old, that is, the pages are not new.
What could be wrong with them, what are the differences from other pages that are in the top?
PS through the webmaster sent more than once for re-indexing, but without results.

Answer 1

and that, upon request, all non-target pages and only yours - the target - are somewhere below?

Answer 2

Check the keyword density on the site and the uniqueness of the content, buy a couple of articles with links and there should be a miracle