So I just made a fresh install and grub-efi just doesn't want to show up in my BIOS so that I could pick it to boot from it. Thought something might have gone wrong during the installation, so I started again but same problem. Had Ubuntu installed before and I can still pick the Ubuntu grub. I can also pick the Windows 10 efi bootmanager. Only Kali doesn't want to work.

I hope someone can help me, since I'm starting to lose my last hairs.