Can't force scale factor for 4K display, no spotify.desktop file [Linux]

[androgarbage]

Plan

Premium

Country

US

Device

Lenovo Yoga 920

Operating System

Ubuntu 18.10

My Question or Issue

I just installed Spotify on my Ubuntu 18.10 machine, however since it's a 4K UHD display, everything is unreadably tiny. I have seen some posts saying to modify the spotify.desktop file, but for me, it doesn't exist. I checked everywhere, and no, it was not in /.local/share/applications. In fact, there's nothing in that folder at all, even after Ctrl+H. I've also seen that I should add a command line option, but I don't know how to do this and I can't find anything telling me how.

Attached is a screenshot showing how tiny everything is, just in case you wanted to see.