Oh, yeah, I got an error with the original command you wrote, so I ended up typing the correct one anyway, and that’s what returned the message that I’m already part of that group.
So, just to make it clear, sudo adduser “<myusername>” kvm was the command I ended up using and that told me I’m already part of the group (I’ve been trying basically all solutions I could find online and I think one suggestion was to add myself to the group, so I may have already issued that command earlier today and I did restart several times between then and now)
I fixed my issue by flashing the latest Beta BIOS for my motherboard. Took me almost a full day of troubleshooting and looking online and repeating the same steps over and over again, but then almost on a whim I decided on flashing the Beta BIOS (no mentions of virtualization in the changelog, so I didn’t really have reaaons to) and now Android Studio finally simulates the Android device. Thanks for your help!