Hi DorionRose, This is Ramesh.
You can clean install Windows 11 using the Windows 11 USB setup disk. Before that, please backup your data to an external drive or cloud.
You'll need a USB stick of 8GB or higher capacity to create a USB setup disk. Note that the contents of the USB stick will be erased during the setup disk creation process.
Download Windows 11 Media Creation Tool (MCT) from one of these links:
https://go.microsoft.com/fwlink/?linkid=2156295
Run MCT and create a bootable USB disk.
After creating the USB setup disk, connect it to your computer and boot from it. To do so, you may need to change the boot order in the BIOS/UEFI settings. Consult your system or motherboard manual to learn how to access the UEFI settings for your model.
Then, clean install Windows using the on-screen instructions.
See:
Windows 11 Clean Installation (Video instructions):