See p. 19. HP only offered PCIe/NVME M.2 SSDs with the laptop. Usually an M.2 slot will accept ONLY SATA or EITHER SATA or NVME. However, it seems likely that in this case the M.2 slot may ONLY support NVME M.2 not SATA. Try reseating the M.2 SSD in the slot. If it does not show up and appear as an installation option to a Windows 10 installer disk and does not appear in the boot order list in the BIOS (tap F9 as you power up) then I think you need to get an NVME M.2 SSD such as the Evo 970.
See p. 33. You do have a pair of M.2 slots. Have you tried the SSD in both slots?
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