It's good to know that "Linux is only free if your time is worthless" still holds true after all these years. From the way many talk, I honestly thought it might have changed.
Never managed to find a distribution that supported the UEFI bios, booting from an internal SSD, only from external storage via SSD, after so many attempts across a few months, I also managed to burn something on the motherboard.
Conclusion, 300 euros thrown into the local recycling center.
I know Linux systems since 1995's Summer, do regularly manage Linux servers at work, and still this thing failed on me, now imagine regular people.