You can hide your taskbar using Windows 11 settings, but that won't hide it completely. The only way to do that is to use a third-party application.

How to Resize the Taskbar in Windows 11 The easiest way to change the Windows 11 taskbar size is with a registry edit. You can learn more about using the registry here, but as long as you follow ...

The latest beta version of Start11 adds support for vertical taskbar, bringing back the oft-requested feature to Windows 11. Start11 supports placing a vertical taskbar on the left-side or right ...