changing the minimize,close position

Hello everyone.
I was just tweaking and trying to add new theme in my ParrotOS. However, the position of close,maximize,minimize button now has changed to the right-most side and now it is becoming really difficult for me to use since I already had the habit of using it in left. Is there any solutions to change the position? I tried to change by configuring the desktop preferences in dconf but it still is not working.

To restore the position of the Minimize, Maximize, and Close buttons, do the following:

Open a Terminal or press ALT + F7 (Run Application) and enter the following command:
gconftool-2 --set ‘/apps/metacity/general/button_layout’ --type string ‘menu:minimize,maximize,close’

Ready! The change will be viewed instantly.