I am engaged in the promotion of my site but so far there are no results so I decided to find out what to do. Where to start to increase traffic to my site?

From myself I can say that I regularly conduct on-page seo checker and I recommend you to use the online service https://pr-cy.io/tools/content-analysis/ On the site you can find out why such a checker is important. Also see what data for analysis you get after the checker. Then already make the necessary conclusions and improve your site.