Managing Inactive Widgets
Step 0:
Go to the WordPress dashboard. In the left-hand menu, navigate to Appearance and select Widgets.
Step 1:
In the Widgets section, locate the Inactive Widgets area. Here, can see widgets that are either no longer active or have been removed from the active widget areas. have the option to either delete them or reactivate them as needed. If there are any inactive widgets that no longer require, can safely remove them from this section. After have made changes, click Publish to save the settings.