Hopefully this video was helpful:
Here is the hard drive I use! (as Amazon associates, we earn from qualifying purchases from paid links below)
* SanDisk Extreme Portable SSD: https://amzn.to/49B8xAY
Additional Info:
If the SanDisk Extreme Portable SSD is not detected, recognized, or showing up on your Mac, check out the solutions here: https://bit.ly/3SLKDfE