Not in the directories, in the libraries.
You create the folders/directories with your OS then you create the libraries with Kicad to place in the directories.
Did you follow the instructions in the “Beginners Guide…” FAQ?
Once you have libraries in folders; to place symbols or footprints in their appropriate libraries, follow the below instructions.
The easiest is to highlight the Symbol/footprint in the Kiicad library, then:
File > Save as. Keep the same name (or change if you wish) up top in the newly opened window; then scroll through the underneath library list and highlight your new personal library in that list and click OK.
You will now have that Kicad symbol or footprint in your personal library.
Close the kicad library and open your personal library to confirm.