Linux: Fix Corrupt System

Reboot.
Repeatedly press Esc to go into Grub, but don't escape the Grub Menu (which is fucking hard).
1. Apparent fix: Enter normal, keep tapping Esc. Will reboot into Grub Menu.
Go into root prompt.
sudo fsck /dev/sda1 -y – This is the boot partition, might not work.
sudo fsck /dev/sda2 -y – This the main partition.
timeshift –list
timeshift –restore
Follow the prompts.