I installed it from the Calamaries Installer found in the LIVE USB ISO this time. And Instead of my primary hdd, I installed it on the other one. Works now, thanks for all of your support, dear nerds.
Together with all the other information you’ve shared, it’s not entirely clear why it has failed; at least to me.
If you’re not married/tied to the installation of Debian, may I suggest installing Linux Mint, Pop!_OS, Tuxedo OS or Zorin OS instead?
There are of course many other distros you could choose, but the earlier mentioned ones are ‘stable’ like Debian is. I thought that perhaps it was what attracted you towards Debian in the first place.
Yeah, I couldn’t find a good solution online either. Maybe It was a bit flip? Guess the universe sent a high velocity particle at my PC from lightyears away just to ruin my day, that’s the only explaination I have after seven hours of looking online.
Sure, I’ll check out some other distros.