Re: Best way to reinstall Grub
I assure you my installed system was also Fedora; however it had been modified by me so it had apt-get already. I don't know why it didn't have yum or dnf, that's what made me realize I had seriously broken it by a "remove" command I did earlier using apt-get. That is probably what caused the system to die and fail to boot in the first place. I didn't know how apt-get worked and when I did a "remove" command for a package it removed too many other things along with it and broke the system.
In any case I have now fixed the situation by installing Fedora 26, using custom installation where it only formatted the root and boot partitions, thus saving all my personal files and installing GRUB.