Good day Hareesh, thanks for your question. I am glad to be able to provide assistance to you today. You can block a website by using an extension and you can search and try to use any blocking extension and you can also check out the links below for reference.
https://browserhow.com/how-to-block-a-website-o...
https://browsertouse.com/blog/21164/block-certa...
https://www.thewindowsclub.com/how-to-block-a-w...
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Note: This is a non-Microsoft website. The page appears to be providing accurate, safe information. Watch out for ads on the site that may advertise products frequently classified as a PUP (Potentially Unwanted Products). Thoroughly research any product advertised on the site before you decide to download and install it.
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Regards,
Paul R.