How to disable Taskbar auto-hide on Windows 11

To disable the option to automatically hide the Taskbar, use these steps:

Open Settings.
Click on Personalization.
Click the Taskbar page on the right side.
Click the Taskbar behavior setting.
Clear the Automatically hide the Taskbar option.

After you complete the steps, the Taskbar will always show in the desktop as intended by default.

Source - How to enable Taskbar auto-hide on Windows 11 | Windows Central