Hello! Everywhere! Any site without visitors is an unnecessary set of pages for anyone. The goal of SEO is to:

raise the pages of your site for a large number of targeted requests as high as possible;
constantly analyze the TOP and identify new interesting features;
increase the coverage of search queries and site traffic (including in non-standard ways);
increase requests / sales / recognition / image, etc.
improve conversion (not only on the website, but also in search results).
Most often, this tool is not used to its full capacity and solves only 1 problem: bringing the site to the TOP according to the list of requests.