Since sitemaps assist search engine bots in finding and indexing your website pages, it helps improve your search engine visibility.
Let’s say you have a new blog that has no backlinks. Google will have difficulty discovering your content and might not index it. And if it can’t index your page, it can’t rank on the search results.
But with a sitemap, you’re letting Google know where to find the page on your site. As a result, the crawler will discover all your pages and index them.
That’s why search engines like Google and Bing provide an option for website owners to submit their sitemaps.