The first file search engine bots look at is the robot’s txt file, if it is not found, then there is a massive chance that crawlers won’t index all the pages of your site. This tiny file can be altered later when you add more pages with the help of little instructions but make sure that you don’t add the main page in the disallow directive.Google runs on a crawl budget; this budget is based on a crawl limit. The crawl limit is the number of time crawlers will spend on a website, but if Google finds out that crawling your site is shaking the user experience, then it will crawl the site slower. This slower means that every time Google sends spider, it will only check a few pages of your site and your most recent post will take time to get indexed. To remove this restriction, your website needs to have a sitemap and a robots.txt file. These files will speed up the crawling process by telling them which links of your site needs more attention.