INSTALLING A NEW OS - (NOT THE OEM OS SUPPLIED BY DELL)

Hello everyone, dear supporters
My problem is a bit complex, so I will present it in detail.
I would like to legally install Windows 11 that I bought separately using a flash drive created by Microsoft's legal and official media creation tool.
I do not want to install the OEM system provided to me by DELL by using the F12 button through the BIOS.
To do this, I press the F2 button when the DELL logo appears and change the boot order so that the flash drive boots first.

The problem is that I don't see the SSD and the old partitions that exist in it.
I suspect that the problem lies in the fact that there are hidden SSD partitions that were not created by the normal operating system but by DELL.

My question is simple:
Am I allowed (by external means) to delete the above partitions so that I can see the SSD, and then recreate the partitions using the Disk On Key????
Will it work?