Kali-linux-2019-2-release cannot reboot

Linux Orkeven-Kali 4.19.0-kali5-amd64 #1 Debian 4.19.37-2kali1 (2019-05-15) x86_64 GNU/Linux

No LSB modules are available
Distributor ID: Kali
Description: Kali GNU/Linux Rolling
Release: 2019.2
Codename: n/a

I am running kali as a dual boot on a Dell Latitude E6420
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I recently encountered a problem after running apt update during an installation of an epub reader, as when I tried to launch a 3D graphics software it simply didn't launch. I tried launching it in terminal and got an OpenGL error message (check if OpenGL is working). I tried updating OpenGL (mesa package), but it didn't resolve. I tried to install nvidia driver since my GPU is nvidia and this bricked my computer, and I couldn't reboot.
It was a "failed to load kernel module" error during reboot.

I was able to resolve this by purging out nvidia and then rebooting.

I cleared some space of about 10GB on my pc to accommodate more tutorials, after which I thought to perform a dist-upgrade since during my brief research I had noticed a new upgrade for Kali. After the upgrade, I was left with about 8.3GB of free disk space.

I resumed my tutorials and then when I tried to render an output, halfway through the project, the software froze and didn't respond to my attempts at closing it.
So, I launched another version of the software and continued the tutorial, as I was afraid something might go wrong if I tried a reboot of the system. I simply wanted to complete the project and hit my deadline.

While I was working I got a notification that I had about 700+ MB of free space left. Before I could recover from the shock it had become 200MB. I initiated a reboot, during which time it had become 0MB just before the lights went out.

The reboot failed as I kept on getting "failed to start modem", failed to start hostname.

This happened two nights ago.

If anybody knows how to resolve this, it will be appreciated. Thank you.

*edited
I can access terminal via Ctrl-Alt-F3
apt isn't working, but keeps returning an error that ends with No space left on device.
Even "rm" didn't work.

*edited
I tried "ls" and it listed the contents of the directory. So, I used "cd" into a folder and tried to delete a file I know is about 20MB with the hope that it will create space, and it did.
So, I just edited the grub config file (as seen in another thread) and updated rub:
=> nano /etc/default/grub
=> update-grub
It worked. ☺

I'm going to reboot and see. But, I wonder what to do about the space that I no longer have.

**update 👇
I have rebooted and there is no [Failed] errors anymore, not of the daemon, nor of the modem manager or the hostname service. Everything showed [OK] in green, but it is stuck on "Resuming from hibernation" with a bleeping cursor under.
It is still stuck.

[SOLVED]

Side note: I have been considering ways to simply wipe the slate clean and installing Kali directly over the Internet via terminal, since that was the only access I had. I don't know if such is possible with Linux. I hope it is. That would really make it stand out as a power OS, if a user can simply wget and install a full OS.
In any case, this led me to consider erasing all files, and reminded me of the clean command.

Everything I had tried until now would show a "No space left on device" at the end. So, maybe if I could find a way to create space, then I might just be able to resolve it (I was considering running apt update afterward to fix the any redundancy).

So, I did the following:

apt clean
apt autoclean
apt autoremove
apt autoremove --purge (to sort out more redundancies, if any)
reboot

All in root mode, of course.
Done! ☺

I got my 8+ GB space back as well.

I think it was the clean that did it. I just did the others to be doubly sure. 😁

I hope someone finds this helpful in the future, especially to free up space on his/her device.