Google have tool

Install youst plugin on your wordpress their you will find Sitemap option.

you can create it online. its very easy for you. you can go on xml-sitemapgenerator to create.

Many Tools are Being Used to create a sitemap.xml

by Using Sitemap generator tool you can create your sitemap

you can the sitemap generator tool.

if you use wordpress cms you can use yoast plugin!

Use sitemap generator and other way is by adding sitemap in webmaster

you can use plugin seo by yoast or google xml

You can easy create sitemap by the xml-sitemaps.com.

Using https://www.xml-sitemaps.com/ to create free xml sitemap generater tool...

Google XML Sitemaps
 

install the "Google XML Sitemaps" pluging and put www.yourdomain.com/sitemap.xml to google webmaster

you can use yoast seo or google xml sitemap

not easy you are create site you are xml site map generated and copy paste your site .

One simple way to create a sitemap is by doing it via XML-sitemaps.com. Another method is to have a third-party WordPress plugin create your sitemap file.