Yes, a situation where internal linking is not well implemented is can be a determinant to the ranking of your website. Internal links are exceptionally vital in the SEO procedure as they assist the search engines into indexing the different pages on your website according to their relative importance. They help in the finding of new material, share PA, and enhance user experience by directing users to the most suitable web pages. Inability to internally link your pages mess up your site and make search engine crawlers to struggle pulling your content, thus leading to low rankings. Also, it may be difficult for the users to find different parts of the site, which in turn raises the bounce rates and worsens the situation with search engines.