You can hide the total number of reactions you see on ads in News Feed or Facebook posts from other people like family, friends, Pages and groups that you may or may not follow.

 

 
You’ll still see the total number of reactions on posts in other places like Facebook Watch, Marketplace and Events.
  • If you turn this setting on, you won’t see the total number of reactions on all ads in News Feed and posts that may show up in News Feed, Pages or groups.
  • You can’t hide the total number of reactions on individual posts.
To hide or unhide the total number of reactions on other people’s Facebook posts:
  • At the top of Facebook, click account.
  • Click Settings & Privacy, then click News Feed Preferences.
  • Click Reaction Preferences.
  • Next to On posts from others, click  to turn on this setting. Click  to turn this setting off at any time.
If you hide reaction counts on posts from others, you can still see who reacted to those posts. Tap the words next to  on each post to see who reacted to the post.
 

How do I hide or unhide the number of reactions on my Facebook posts?

 
You can change whether people can see the total number of reactions on posts you create from your Facebook profile or News Feed. This means that:
  • If you turn this setting on, people can’t see the total number of reactions on any post that you create from your profile or News Feed. You can’t hide reaction counts on individual posts.
  • People will still see the total number of reactions on posts that you create from other places like groups, Marketplace, Events, Pages and Stories.
  • You’ll still be able to see the total number of reactions on your own posts.
This setting doesn’t hide who reacted to your posts. You can still see who reacted to your Facebook posts.
 
To hide or unhide the total number of reactions on your Facebook posts:
  • At the top of Facebook, click account.
  • Click Settings & Privacy, then click News Feed Preferences.
  • Click Reaction Preferences.
  • Next to On your posts, click  to turn on this setting. Click  to turn this setting off at any time.
 Here a youtube which shows how to control this feature through your mobile, dont forget to share with your friends