Hello there,
The latest update has removed the registry hack that was been used by many users to position the taskbar. As a workaround, you may try third-party applications to move your Taskbar as this legacy setting has been removed.
You can’t move the Taskbar on Windows 11 because this is an entirely new design and moving it around the screen is a challenging process. Microsoft has explained that only moving the Taskbar to the right side suddenly changes the entire design (including the Start menu and apps), and the current interface and animations are designed for the bottom placement. As a result of the work that implicates, it was not worth the effort since there was insufficient demand.
You can also voice out your requirement in the feedback hub. You can raise feedback to the Microsoft team. The Feedback Hub app lets you tell Microsoft about any problems you run into https://support.microsoft.com/en-us/windows/send-feedback-to-microsoft-with-the-feedback-hub-app-f59187f8-8739-22d6-ba93-f66612949332
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