Perform the following steps to enable never combine taskbar buttons in Windows 11:
Sign in to your Windows 11 PC.
Go to Settings > Personalization > Taskbar > Taskbar Behaviours.
Click on the drop-down next to combine taskbar buttons and hide labels and set it to Never.
Note: You can also right-click on your taskbar and select Taskbar settings to view all the settings applicable to taskbar.
After turning on the option never combine taskbar buttons in Windows 11, your applications appear on taskbar as individual items. Because each application appears as a separate item on the taskbar, you’ll notice that when you have multiple apps open, the taskbar takes up the majority of the available space.