I accidently erased VOLUME GROUP instead of just the Mac HD- Data, so what do I do?

Jaime Sue wrote:

Yes, the first link you posted is the one with “delete volume group" highlighted. It’s very easy to click that and then read where it says not to click that. Now I cannot install the Mac OS because there is no volume to select to install it to. So what’s needed is how to put the volume back. All I have now is APPLE SSD SM0256G Media and an Apple disk image Media with OS X Base System.

In Disk Utility click on "View" and select "Show all devices". The physical drive should now be shown in the left pane of Disk Utility. Select the physical drive and erase it as GUID partition and APFS (top option). The physical drive will likely be named something like "Apple SSD ....", "Hitachi HD....", or something similar depending on the age of the computer.