Flourish Pixel

Remove/Exclude specific categories from site RSS Feed. You just need to install this, then place your category id in it’s option page and save. That’s all. If you want to exclude more than one category, then place them one by one and separate them by comma.
For Example: -1,-2
**Note: you must need to use minus sign (-) before category id.

FP RSS Category Excluder

Remove/Exclude certain categories from site RSS Feed.

Sirius Pro

Simply Exclude Pages from WordPress search results and display only post in search results. This plugin allows you to exclude WordPress websites from search results without modifying the code and it works with most of the available themes. Just install and activate this plugin to exclude pages from search results in WordPress.
Read more about this plugin on <a href="https://siriuspro.pl" rel="nofollow ugc">WordPress</a> blog.

Exclude Pages from Search Results

Simply Exclude Pages from WordPress search results and display only post in search results.

FP RSS Category Excluder vs Exclude Pages from Search Results