I have a MacBook Pro 15 on which I tried to install Ubuntu 20.04 as my host OS. However, the installation has failed. Whilst waiting for the Linux forums to help me out with the installation, I am trying to go back to macOS, but I am unable to do so.
Next, I entered Recovery Mode (Cmd+R), then selected "Reinstall macOS". However, when the software asks me to select a drive, I found no drives at all. So, I can not continue and complete the installation.
I also tried to restore the main drive from Disk Utility, but received the following error:
Can somebody please help me reinstall macOS on the MacBook Pro 15?
diskutil list
from Terminal in Recovery. i can't see enough of the left column in your second pic to try figure out what you've done.