I’d just recommend checking hard drive SMART scores and stuff like that. Maybe run a memory test as well.
If you scroll down in journalctl, it can go later in time. Also, you can check different boots by changing the b parameter, with -b 0 being the current boot, -b -1 being the previous boot, b -2 being the boot before that, etcetera.
For UFW, I'd just try unblocking the Proton ports if it says they're blocked in Proton settings. Also, check to make sure you don't have two firewalls installed; while this once again shouldn't crash the system, my PC did some very weird things when both UFW and firewalld were installed.
Alright then. That probably eliminates the lp thing. Can I ask: what journalctl command (or logging command in general, if not journalctl) did you use? I'd recommend giving the results of journalctl -b -1 -p 3 and dmesg.
Also, it'd probably be a good idea to tell us what ports are getting blocked; that shouldn't be personally identifying in any way. After doing research on what those ports are and what ProtonVPN requires, try experimenting with unblocking some of them if you can; a blocked port shouldn't crash your system, but it's worth a shot.
I might also recommend looking at a task manager, just to make sure some application isn't taking up all your memory and causing the system to freeze.
Finally, take a look at your CPU temps in case this is some kind of cooling failure.
I don't think it's ProtonVPN, at least not directly, as those happened over 20 minutes before the crash (I'm assuming it happened somewhere around 9:32:30)
That last one looks really odd, and I'm wondering what that kernel module is used for. I'm looking around real quick.
EDIT: Looks like it's for line printers. I'm trying to think why your kernel would randomly load that. Can we see the contents of the following?:
/etc/modules-load.d/modules.conf/usr/lib/modules-load.d/modules.conf/usr/local/lib/modules-load.d/modules.conf(if it exists)/run/modules-load.d/modules.conf(if it exists)
Also, can you give us more information about your hardware, just to be sure?
xkcd 1085:

Interesting project, but not pulling me off XFCE terminal.
The name sounds like a Romulan senator, though.
You're not going to like how I-Chaya the Red-Nosed Sehlat ends...
No, not Santa.

At least they provide an official Flatpak now.
Also, this isn't an official repository, but https://github.com/palfrey/discord-apt works pretty good for me. If you look at the source code for the fetching script and the Github Workflows, you can see that they just pull directly from the Discord website, and comparing file hashes further confirms it. I no longer use it since the official Flatpak is an option now, but it's still useful.
“Attempt to calculate answer to your question: Why you want dried leaves in boiling water.”
“Because I happen to like it. That’s why.”
Let’s give him a statuette of Gul Dukat called “National Award for Supreme Attainment in Bajoran Statue Nonextancy”.
You know, GNOME does some stupid stuff, but I can respect them for this.