Copied and pasted directly from a post on Facebook. I have tried this on my computer and it doesn't work. It only works on cell (mobiles for the Brits) phones apparently.
Here’s how to avoid hearing from the same 26 FB friends and nobody else. This post explains why we don't see all posts from our friends. Funny, thought if I followed you on Facebook I would see what you post. Not anymore

Your Newsfeed recently shows only posts from the same few people, about 25, repeatedly the same, because Facebook has a new algorithm.

Their system chooses the people who will read your post. However, I would like to choose for myself, Therefore, I ask you all a favor - If you are reading this message leave me a quick comment, a "hello", a sticker, whatever you want, so you will appear in my news feed

Otherwise Facebook chooses who to show me and I don't need facebook to choose my friends!
Do not hesitate to copy and paste on your wall so you can have more interaction with all your contacts and bypass the system. That's why we don't see all posts from our friends.
Thanks for the heads up from those who already copied and pasted the above. Hold your finger down anywhere in this post and "copy" will pop up. Click "copy". Then go to your page, start a new post on your page, then put your finger anywhere in the blank field. "Paste" will pop up and click paste.