Why am I not seeing SSD in Disk Utility after installing?

HI, I found a video on youtube about installing an SSD using an adapter that looked quite easy to install. But after doing this, I am not seeing the SSD in Disk Utility. He was installing it in the same Mac mini. I purchased this adapter. and purchased this SSD. I started up in recovery mode, and opened up DU, but only see the HD. Shouldn’t I see it at this point, in order to format it? I’m sure it snapped in fully, though I can recheck it again if that might be the issue. The SSD fit nicely inside the adapter. Did I purchase items NOT compatible?

Any help would be appreciated, Thanks!

Rebecca

edit:

Oddly, the links didn’t show. These are what I purchased:

Adapter: Sintech M.2 NGFF NVMe SSD Card for Upgrade Mac Mini Late 2014 Year A1347 MEG Series

SSD: Western Digital 1TB WD Blue SN550 NVMe Internal SSD - Gen3 x4 PCIe 8Gb/s, M.2 2280, 3D NAND, Up to 2,400 MB/s - WDS100T2B0C