Lubuntu limbo - Exiting the busybox prompt

After succesfully setting up a Lubuntu system in an old MacbookAir 2015 and going through the amazing experience of ~~figuring out and installing drivers~~ I was ready to boot it up next day and do some work.

Next day comes and boom, something like this shows up:

BusyBox v1.18.5 (Ubuntu 1:1.18.5-1ubuntu4) built-in shell (ash)
Enter 'help' for a list of built-in commands.

(initramfs)

Thankfully, this was super easy and quick to fix, not something common in the Linux experience.

I'm going to credit this link and more specifically this answer for the solution.

I just had to attempt to exit first.

I'd see something like this:

/dev/mapper/ubuntu--vg-root: UNEXPECTED INCONSISTENCY; RUN fsck MANUALLY.
(i.e., without -a or -p options) 
fsck exited with status code 4. 
The root filesystem on /dev/mapper/ubuntu--vg-root requires a manual fsck.

Just ran:

fsck /dev/mapper/ubuntu--vg-root -y

And then exit again. reboot command didn't work, nothing happened, no error message, nothing.

Again, all credit to the answer I linked above.