Crawling process is complicated. Normally, users use software called spiders or Googlebot. Bot starts crawling by selecting a web page and then following the links on that page. After that, it is crawling that page and following the links on that page, until all the links have been indexed.
Webmasters and SEO experts should try to offer quality content, optimize the website, generate and create valuable links following the quality guidelines from Google to increase the rank of the web page.
• Using Site Command for the fastest method
• Using Google Search Console for the most accurate method
Many popular websites use pagination as a way of breaking up a big amounts of content. However, it is very common that websites only allow Googlebot to visit the first page of the pagination.
As a result, Google cannot easily find a large number of valuable URLs.