A Microsoft service that provides website owners with tools to monitor, analyze, and optimize their site's performance in Bing search results.
Hello. From what you've described, this doesn't sound like a robots.txt, sitemap, or server issue.
I did a quick check and noticed that a Bing search for:
site:somnathmahato.inreturns no results at all. Combined with the "Discovered but not crawled" and "URL cannot appear on Bing" messages in Webmaster Tools, that can sometimes point to a site-wide quality/trust assessment rather than a technical crawling problem.
Only Bing can confirm the exact reason, but the fact that the entire domain appears to have zero indexed pages is consistent with what other users have reported when their sites were being filtered from the index.
Since you've already verified the basics (robots.txt, sitemap, HTTP 200 responses, etc.), I'd recommend opening a support ticket with the Bing Webmaster team and asking them to review the domain:
Be sure to include the URL Inspection screenshots and mention that site:somnathato.in returns no results in Bing despite the site being accessible and indexed elsewhere.
Hopefully they can take a closer look and provide more specific guidance.