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.
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.