Bricked my Mac mini
Solution 1:
Your Mac may boot from Internet Recovery if you can go ta Different network so that may be the fastest to avoid the need any OS on an internal or external drive data whatsoever to boot to an installer that can erase and reformat the storage.
The details are linked above and the basics from Apple are below - choose erase when asked in the guide.
- https://support.apple.com/en-us/HT204904
If no other network is available, you will need another OS to boot this hardware or another Mac and target disk mode to self rescue the situation.