no disk available to re-install macOS

Hi community,

The IT guy of my company wiped my laptop but accidentally he deleted more than he should.

When I restart the laptop the apple logo shows up and it enters Boot Recovery Assistant with an error message stating that "the version of macOS on the selected disk needs to be reinstalled". There are two options available, "Startup Disk..." and "Recovery...". If I select "Startup Disk..." there is no disk to select from in the next window. If I select "Recovery..." and I try to Reinstall macOS Big Sur, there is no disk available to install. And if I select Disk Utility, I see the following screenshots:

As you can see I'm pretty much stuck. Do you have any idea how I can enable a partition to re-install macOS?

All the best,

Edu