RSS feed for other pages except from the front page showing 404 error.

Your feed seems to be at https://humenglish.com/feed/

Thanks for your response. I know that I have my feed for the front page as I have already mentioned. I am concerned about feed from other pages like category pages. It is giving 404 error. For your knowledge, previously there was feed for all the pages on the website. This is a recent issue.

This may be a plugin or theme conflict. Please attempt to disable all plugins, and use one of the default (Twenty*) themes. If the problem goes away, enable them one by one to identify the source of your troubles.

See https://www.wpbeginner.com/plugins/how-to-deactivate-all-plugins-when-not-able-to-access-wp-admin/

Thanks for your time and concern. The issue has been resolved. Main problem was with Yoast SEO plugin. It automatically overridden the permalink structure, which lead to this issue. Changing Yoast settings resolved the problem. Once again thanks a lot for your precious time.