>I just looked up how KDE does it, in case you're using that, the file manager is called Dolphin, and apparently you might need to install an archive tool first such as Ark and/or 7zip, gotta give you that one, I'm a little shocked, that's a pretty shitty OOBE in my opinion[..]

I think that's an artifact from running just the liveimage and not installing it fully to the VM. I'm 99% certain Ark is included in a default Cachy/KDE install.

This is precisely what it is, I hopped on my cachyOS install that I set up a few days ago and I can double-click the IntelliJ IDEA tarball from Dolphin and Ark pops up. I didn't install these manually, they came pre-packaged with KDE.