All drives are shown under the This PC group in the navigation pane of File Explorer by default.
Removable drives are shown as separate groups in the navigation pane of File Explorer by default in addition to being shown under the This PC group in the navigation pane.
You could Pin to Quick access the Windows C: drive to also have it under the Home group in the navigation pane.
If you like, you can add the Windows C: Drive as its own separate group to the top or bottom of the navigation pane of File Explorer for even easier and faster access.
This tutorial will show you how to add or remove the the Windows C: Drive in the navigation pane of File Explorer for your account in Windows 11.