If you don’t know How To Turn Off Comments On Facebook Post then you must follow these steps:-

1. Launch Facebook on your PC and click on your Profile Picture at the upper right.
2. Select Settings & Privacy and click on Settings.
3. On the side panel, go to Audience and Visibility > Profile and Tagging.
4. Then click Hide Comments Containing Certain Words From Your Profile.
5. Key in the unwanted words in the blank box. Apply by clicking Save.

Read More:- https://allinsider.net/how-to-turn-off-comments-on-facebook-post/