The Classic Widgets plugin is useful if you want to use the old WordPress widgets in the new Gutenberg editor. Here are the steps to install and use the Classic Widgets plugin:
Log in to your WordPress website.
In the WordPress dashboard, click on "Plugins" in the left-hand menu.
Click on "Add New" button.
In the search bar, type "Classic Widgets" and hit enter.
Find the Classic Widgets plugin and click on "Install Now" button.
Once the plugin is installed, click on "Activate" button.
The Classic Widgets plugin is now installed and activated on your WordPress website.
To use the Classic Widgets plugin, go to "Appearance" in the left-hand menu of your WordPress dashboard and select "Widgets".
In the "Widgets" screen, you will see a new "Classic Widgets" section.
Drag and drop the widget you want to use from the "Available Widgets" section to the "Classic Widgets" section.
Configure the settings for the widget and click on the "Save" button.
That's it! You have now successfully installed and used the Classic Widgets plugin on your WordPress website. You can now use the old WordPress widgets in the new Gutenberg editor.