You can control the size with a simple Registry tweak This article explains how to make your Windows 11 taskbar bigger or ...

The taskbar immediately moves to the bottom left-hand corner. You do not need to restart the machine. Microsoft also offers ...

Right-click on the taskbar, and select Task Manager. Under Processes, look for Windows Explorer Right-click and choose to restart. Wait for everything to complete and the user interface to refresh.

The Taskbar icon should disappear. If it asks you to confirm the deletion. Confirm and after that, restart your computer and try to check if the problem is solved or not. If nothing is working ...