volume erased and macOS can’t install
Volume erased and no recovery options available. Any idea how to install Monterey after hard drive partitioned?
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Partition or not, this is what you do.
You have to have a working Mac to make the flash drive: How to create a bootable installer for macOS - Apple Support
The article also includes OS installation.
Having given no details on your Mac, this is just a guess that it's modern enough for this to be applicable.