ubuntu window close button set left and right position

Let's take a look at the tutorial of setting the left and right positions of the ubuntu window close button:

right-click to open the terminal and
install the gnome desktop environment configuration tool.
After sudo apt-get install gnome-tweaks is

completed, alt+f2
enter gnome-tweaks in the run window, and then press Enter.

Then select the window option in the list on the left,
and find the title bar button on the right, which can be closed, maximized, and minimized, leaving only one close button, and place the selection on the left.

Configuration is complete!