Weird, I got the image at https://ci.ubports.com/job/rootfs/job/rootfs-pinephone-systemimage/ linked from https://gitlab.com/ubports/porting/community-ports/pinephone and it's the latest artifact.
I did come across the proper link, but couldn't flash it because it was a .raw, so I disregarded it, didn't know you had to rename it.
So glad I didn't spend another day going mad over this.
It's working now! Thank you so muchhhhhhh!