What is the importance of internal links
Connecting pages on your site with links is called “creating an internal link”.
Properly building internal links can help Googlebot understand the structure of your entire site, helping to increase the frequency of crawls. You can also quickly call Googlebot on new pages without isolating the page by creating internal links.
Internal links are also very much appreciated by users. If the information that is related to the information that you are looking for is introduced via internal links, users can also obtain information around the information they are looking for. Internal links are also win-win for both, as site owners can also increase the page / session ratio.