In the classic interface File, Edit, Tools etc. Once you click on any menu title, if you open that title and you will see the commands under the title. To run the commands in the menus; Move the mouse cursor to the menu line and click the left mouse button. The mouse cursor scrolls over the menu. When the desired command line is reached, the left button is clicked.
To switch to the classic menu;
Click the Preferences icon from the ribbon menu Settings tab .
The general settings dialog will open. Uncheck the option Use ribbon menu.
When you restart the program, it will open with the classic menu.