Are the backlinks still important for Rank?

Backlinks are especially valuable for SEO because they represent a "vote of confidence" from one site to another.

In essence, the backlinks to your website are a signal to search engines that others endorse your content. If many sites link to the same web page or website, search engines may infer that it is worth linking the content and, therefore, should also be highlighted in a SERP. Therefore, winning these backlinks can have a positive effect on a site's ranking position or search visibility.