How to load Mac OS on new SSD drive

The easiest way is using Internet recovery which is built in. But you can encounter issue’s if you are using a blade PCIe/NVMe SSD. As the macOS by default won’t be the needed version, this is where an external bootable OS installer drive can be better using a second Mac.

To install via Internet recovery How to reinstall macOS

To create a bootable OS installer, format a 32GB Thumb drive from a Mac to GUID and a Journaled fie system. Then copy to it the OS installer onto it from here How to download and install macOS then follow this guide to convert it Create a bootable installer for macOS