Discovered – Currently not indexed [duplicate]

Discovered – currently not indexed

My blog posts aren’t indexing from 1 months. from the last 1 months, I have posted 9 posts articles. But only 1 is indexed by google But for other posts, the Webmaster is saying Discovered – currently not indexed.

All the Not indexed posts are of 1000-2100 words & all are pure un-scraped content, written by myself… The indexed post is of 700 words…

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My Robots.txt file is as follows

​User-agent: Mediapartners-Google Disallow:  User-agent: * Disallow: /search Allow: /  Sitemap: https://www.thetechreview.xyz/atom.xml?redirect=false&start-index=1&max-results=500 

My sitemap

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Here is the twist, I had tried everything but nothing helped. But…

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I think this has some connection with posts that aren’t indexed. Because of the last posts, I published on 24 March and from 26 march, this not indexing series started. I also think that this happened because of google’s new update ‘core web vitals’.

Now, tell me what is wrong with me… Please guide me …