What is the best way to index a website in search engines?

Question

Search Engine Optimization

Good afternoon! Created a website based on the wp template. Installed analytics counters.
The task for starters is to show the search engines that there is such a site at all and to advance on low-frequency queries.
Question: Please tell me the correct sequence of actions, where to start and how to continue?
Since I haven’t been engaged in optimization and promotion in organic search before, I’m afraid that I can start doing something completely different from what is necessary.

Answer 1

For Yandex - https://yandex.ru/support/webmaster/adding-site/ho...
For Google - https://support.google.com/webmasters/answer/34397
... webmaster panels of both systems. Further, Yandex has such a form for adding a URL, Google has this .

Answer 2

Don't forget the robots.txt and sitemap files