I was editing my usb but I mistakenly deleted my own system efi partition.
I have been able to keep my laptop turned on this whole time and will try to continue until solution.
I tried to follow this boot - accidentally deleted EFI partition, system is still running! - Ask Ubuntu but i cant understand and follow this step - Edit /etc/fstab so that /boot/efi will be mounted using the new UUID.
Ok the partition is confirmed present. Do you have a Live USB to boot into? IF not, you need to grab (download) an .iso and a USB stick and create one before you power down the computer.
I understand it is scary to power down now that grub is gone. But it is also the way to get it back.
Also - do you have a means of accessing the net and using the forum other than that machine?
Correct - and that references the partition that has since been deleted. Which is why you are unable to reinstall grub from within Zorin OS as it will try to reference that partition that no longer exists. You must boot from Live USB to get a Fresh Read on the new mounted EFI partition.
Then install grub to the mounted EFI partition.