Website errors

I began to notice a lot of errors in the work of my site. I can't find them myself. Who will prompt resources that will help to identify them? Are there free resources?

You can find errors on the site using this resource https://pr-cy.io/ This application allows you to make an website SEO Checker. You will receive recommendations for troubleshooting. Some options are available for free. You can conduct an additional site audit using a paid plan. Analysis will help improve the position of the site in search engines