If it were me, I would just insert a bootable Windows 11 USB drive. Go thru the initial installation procedure, quick format all the partitions, then delete them. If you are worried about sensitive information or data on that drive, I would use a utility called Killdisk which allows you to destroy the data on that particular drive. If your drive was primarily used to play games, then the first option should be good enough and there's no need for Killdisk. If your boot drive is an SSD, then Killdisk is NOT recommended and the first option is the best because it would shorten the drives lifespan.
I'm planning on getting a new Aurora R13 desktop and plan on selling my Area-51 R5 desktop. My question is around resetting Windows 11 on the Area-51 R5.  I've used the Reset feature in Windows before and have had no problems, but it wasn't on an Area-51 R5. I see the current PC has a Support Assist OS Recovery Tools. I'm not real familiar with that feature but I was wondering is that also a way to reset the PC? And if so, does it reinstall the Alienware applications that came with the original build?  So, what are my options and/or what have you done in the past when you want to sell your PC? Thank you.
Area-51 R5, preparing it for sale