First time posting, sorry if this is in the wrong spot!

Short version:
I'm turning an old laptop into a dedicated Kali machine (not dual boot with windows).
Got a new SSD for that extra speed, and a little better battery life.
I created a USB live stick with rufus, and also with win32diskImager.
I can boot into the live session no problem.
Installation of Kali onto my SSD goes perfectly, until it gets to Grub installation.
Something about dummy-grub cant install.
Finish installation without bootloader.
Google problem and find lots of "solutions", all pretty similar.
Log into Live session, attempt to repair grub using variations of the following commands:

mount /dev/sd2a /mnt
mount --bind /dev /mnt/dev
mount --bind /dev/pts /mnt/dev/pts
mount --bind /proc /mnt/proc
mount --bind /sys /mnt/sys
chroot /mnt
grub-install /dev/sda
umount /mnt/dev/pts
umount /mnt/dev
umount /mnt/proc
umount /mnt/sys
umount /mnt
All the research I did resulted in people saying this fixed their issue.
My problem, is that I get an error on the "grub-install" step.

"grub-install: command not found"
I feel like the grub package is not being installed for some reason.
The network setup during initial install appears to work by the way, so I am pretty sure the issue is NOT a lack of Internet connection during installation.

Any thoughts?