Nevermind, i installed it. Here is what worked for me:
Make sure you update your BIOS. Mine was 2 Updates behind. (For dell users, download from dell’s website, make sure you download and install for the correct service tag)
Try to do manual partition in the install wizard if the automated partition did not work.
In the manual partition make sure you set the mount point to ‘/’ (in /dev/sda3 or the partition you’re installing in)
and Make sure you set the mount point to /boot/efi in /dev/sda1.
Ps:
Since the error is in grub-install command, don’t install Grub bootloader with the install wizard ( i think i saw an option to untick it ).
Install it manually using the terminal. ( Ig there are lots of videos and walkthroughs on how to do that.)