The site has slipped in Yandex, how to return?

Question

Search Engine Optimization

Previously, the site was on the first page in the top 10 for blinds (growth region on the Don) For several months - 3 months for sure ----- and now in August it slipped first to the second page and now to the third one,
moreover no changes were made to the site --- how to identify the problem and what to do
zhalyuzi-rostov.ru

Answer 1

and no changes were made to the site

and search engines just love live updated resources.
Dipped sharply - apparently there was an update.
In general, this is inevitable with such a site, the behavioral factor is clearly not ice for you (the site is very dumb). js errors. It doesn't really smell like download speed optimization. I am silent about bundling and minification, but at least it is strange to have 2 ancient versions of jquery on such a small site.
The footer is marked through micromarking, and everything else is not. Here, either do not touch anything, or already cling to the goods
. It is worth checking the filters and bans. Maybe you bought links? Not necessarily now, it could be a long time ago, but if at one moment Yandex marked 50% of your link mass - like go.no links - then the fall will continue.

Answer 2

If we are talking about Yandex, then the reason is probably the weak study of commercial factors, I recommend that you look in this direction. Details can be read here: https://habr.com/post/415991/
Also, first of all, analyze the Yandex webmaster for errors, you never know what could get out.

Answer 3

To get started, see all the information in Yandex Metrics and Yandex Webmaster