Why Pages Aren’t Indexed on Google Search Engine?

There are a couple  of reasons why a webpage might not be indexed by Google. Here know the some of the most common reasion:

1. Technical issues

Complex coding, rendering issues with Javascript, or server errors.

2.  Internal linking

New or orphaned pages with no internal links from other parts of your site.

3. Sitemap

Missing sitemap or errors in the sitemap that confuse Googlebot.

4.Canonical confusion

Conflicting or incorrect canonical tags pointing to different versions of the page.

5. Redirect errors

Broken redirects that lead to dead ends or loops.

How Google Measures Search Quality?