You have two choices here to fix this since you can’t get into a tty. You either have to boot on the live ISO and arch-chroot into the system and then you can add the kernel parameter and update grub. Then install the nividia drivers and reboot.
Or you can reinstall and when it boots to the desktop you can edit the file and add the kernel parameter and update grub. Then install nvidia drivers and reboot.
You cannot run these things from the live ISO.
Can you post
sudo fdisk -l
What kernel parameters?
Here is how you arch-chroot
sudo mount /dev/nvme0n1p2 /mnt
sudo mount /dev/nvme0n1p1 /mnt/boot/efi
sudo arch-chroot /mnt
Then run this and it should show your user
ls /home
Yes it show
So are you in arch-chroot now?
But I have already do that
If you look it show root on previous message and not liveuser
Okay that’s good. Hard time seeing these images.
Yeah sorry for quality 
nano /etc/default/grub
add
ibt=off
ctrl + o then enter to save
ctrl + x to exit nano
The run the grub update command
grub-mkconfig -o /boot/grub/grub.cfg
Then install the nvidia drivers with
nvidia-inst
Edit: Then reboot and hope it works and post
inxi -Ga
I’m still on root soo nvidia-inst is not uninstalled
It boot
nvidia-inst is a tool to install the drivers.
ik its for replace nvidia-installer-dkms
I’m not sure what you are trying to tell me.
Edit: I think reading this again you meant that nvidia drivers never got uninstalled because the tool didn’t run from the live ISO. I assumed you did this before on the installed desktop and then it didn’t boot.
Looks good now! 
yeah thx for your help soo the solution is to add ibt=off