How to submit a website Sitemap to Google Search Console?

After many websites go live, Google does not index them for a long time. One important reason is:
Not submitting a Sitemap.
A Sitemap can be understood as:
“Telling Google which pages on your website need to be crawled.”

First: Ensure your website is set to open indexing status

In the website backend: Settings → Reading → Search engine visibility, make sure the checkbox is unchecked, as shown below

Second: Check your Sitemap URL

Click here to view the tutorial

Third: Go to Google Search Console

Enter the Google Console dashboard,https://search.google.com/search-console/

Find the Sitemaps tab, fill in and submit the Sitemap URL

Wait patiently for processing; generally, it can be found on Google within 2-3 days.

How to check how many pages of your website are indexed by Google?

Directly enter in the Google search box: site:your domain name