You can quickly check your site for external link issues with Site Audit. Just head to the “Issues” tab and type “external” in the search bar. I personally never ever follow the suggestions blindly, but if you are just starting with SEO, I would say these suggestions are really good. https://seo-on-page-wordpress15813.blogdal.com/32125386/tutto-ciò-che-riguarda-realizzare-siti-web-da-zero