No-take after connection expected to decrease the viability of specific sorts of web index spam, along these lines enhancing the nature of web crawler comes about and keeping spam ordering from happening. I believe it's advantage for do take after connections.

We use No-follow links to prevent them from search engine indexing.

Creating backlinks on good web platform makes your content trustworthy to the search engine, mainly we create backlinks to make contents to be indexed on search engine as Google ,but sometimes it depends on attributes from web authorities which allows web crawler to follow or ignore specific content.


"NO follow" is non other an attribute, that refers to Web crawler not to follow any particular link or hyperlink objects on web pages.
most of the link are considered to be skip by the web crawler but sometimes, I have seen some "NO follow" link that has been indexed.
This initiative is to inhibit spamdexing. That means a web pages with "NO follow" attributes, it does not pass on link juice.
So, it’s not 100% accurate that "NO follow" attributed links are never get indexed. It depends on the web authority and the content relevancy and value.
hope you get it helpful.

Through nofollow link no link juice, whereas from dofollow link will give link juice to your website

Nofollow is an HTML attribute value used to instruct search engines bots that a hyperlink should not influence the link target's ranking in the search engine's index.