How do i install virtualbox-guest-additions on fedora silverblue

I recently installed Fedora Silverblue on Virtualbox. I tried to install the Virtualbox Guest Additions but it always fails. First, I tried:

sudo rpm-ostree install virtualbox-guest-additions

But I got:

error: "virtualbox-guest-additions" is already provided by: virtualbox-guest-
additions-6.0.4-2.fc30.x86_64. Use --allow-inactive to explicitly require it.

The system says that the Virtualbox Guest Additions are already installed but it does not work.
After that, I tried installing it via the ISO image but it does not work too because it is a read file system which I understand.

So, does anyone know how to install the Virtualbox Guest Additions on Fedora Silverblue?

EDIT:

sudo modprobe -v vboxvideo gives me:

And this is the output for modinfo vboxguest: