I remember I used Matrox card long time ago back when Ubuntu was new 2004 and it was next to impossible to working.
If that is correct - and it is quite possible - then you may need dkms and the relevant header package for your running kernel.
To find the running kernel use mhwd-kernel - example from my system
$ mhwd-kernel -li
Currently running: 6.6.8-2-MANJARO (linux66)
The following kernels are installed in your system:
* linux66
Then use the output from your system to install dkms and headers.
Following the example above
sudo pacman -Syu linux66-headers dkms
I don’t think you will get it work - at least not how you intend. Please see the part I highlighted with bold font
To support Unix and Linux, Matrox has released only binary drivers for most of their product line and one partially free and open-source driver for the G550 card which comes with a binary blob to enable some additional functionality. These drivers were tested and are allegedly supported for quite old distributions. They do not work on newer Linux kernels and
X.OrgServer versions. In addition to the proprietary drivers provided by Matrox, the DRI community has provided drivers under the GPLlicense for many more of the devices.