This article explains how to put an RSS feed on a Facebook page. The information only applies to pages, not profiles.
How to Post RSS Feed Items to a Facebook Page (Contains Specific Word)
The free IFTTT service lets you automatically post an RSS feed to your Facebook page. When IFTTT identifies new content from the feed, it will create and publish a new Facebook post for you.
Create a free IFTTT account if you don't already have one, or log in to your account if you do.
Select 'Create' at the top of the website to build a new connection.
