I have compiled as self-contained, however I missed some configs to make sure that all native binaries were included in the final executable. I've made a new release recently (https://github.com/JustAman62/undercut-f1/releases/tag/v3.0....) which should resolve this issue.

As noted in https://github.com/JustAman62/undercut-f1/issues/3#issuecomm..., I think there's still more work to do to make the single-file executable work properly on Linux, due to the intricacies of the native Skia libs.