It is statistically proven that by including symbols, signs and emojis, your post will generate more interaction and 
clicks.
To see the all of the symbols and emojis that are available, you can check this link: https://www.piliapp.com/facebook-symbols/
PRO-tip:
If you use FB Messenger or Chat, you have a smaller selection of symbols that you can use. Choose Messages & Chat from the left upper menu to see all available options.
