Welcome to Tom's Hardware, @Free_1!
This sounds pretty unfortunate! Have you tried swapping the SATA cable and the port on the motherboard where the SSD is connected? If you have access to another computer, I'd strongly recommend checking how the SSD would appear there as well. You can try to initialize it from there. Keep in mind that initializing and then formatting the drive would erase all the data you have previously stored on it.
If you haven't tried this already, I'd also suggest
resetting BIOS. The settings will go back to factory defaults, so you will need to re-configure any manual changes you have made there (e.g. SATA mode and boot priorities).
Checking the health and SMART status using
an SSD-specific diagnostic tool is also advisable!
Keep me posted with the results.
SuperSoph_WD