I tried sudo pacman -S grub and sudo update-grub via liveCD chroot already but with sudo update grub it didn’t even detect manjaro.
Of note are: It was a fresh install. I recently immigrated from ubuntu. I changed my root password after it oddly refused to accept the same password it used to before. This behavior was during update. And someone with a similar problem solved it via kernel messing but i can’t find that thread anymore.