I want to check some pages of my website for relevancy and SEO optimization for a certain keyword query. Can you tell me how to do it?

Actually, there are different ways to check the pages of the site for one or another important parameters for promotion. For example, I always do it my site first with this On-Page SEO Checker - pr-cy.io/tools/content-analysis/ (https://pr-cy.io/tools/content-analysis/). It shows me all the necessary parameters that are very important to consider for the successful development of any Internet resource.