So here's an update!
After updating my drivers, I had no issues for about a day or so, but then I got another freeze seemingly out of nowhere. Since I still had a lot of work to do, I just rebooted and resumed working.
A couple of hours later, when I was standing up from my desk to do something else, I put my headphones on top of my PC case and had another freeze, so that obviously made me suspicious: I rebooted the PC and gave it a slight tap on top and sure enough it froze. Therefore I opened it up and removed the Video Card so I could access my recently installed M2 SSD. I realized it wasn't exactly tightly screwed on so I removed it and slotted it back. Reinstalled the Video Card as well, obviously, and tried to tap the top of my case a few times while the PC was on, and didn't get any freezes.
So right now it's been almost a week with no freezes, I'm not sure whether my SSD or my Video Card were poorly installed, but they were the last things I touched before I started getting freezes, so I believe them to have been the cause. I'll give it a bit more time before considering this solved.
Thanks once again for your support!