Touchpad on acer R721T (Stoneyridge)

I have a Acer R721T and after installing Debian 12 with Mrchromebox’s tools the touchpad don’t work. Fortunately, I can use a USB mouse as a temporary replacement. I already ran the cros-keyboard-map on my device, but it only fixed the keyboad mapping and did nothing to the touchpad. I tried to run the Chrultrabook controller with ./chrultrabook-controller_2.4.0_amd64.AppImage in the terminal after making it executable, but that did nothing until terminal froze and I forced quit.

None of those woukd fix your problem.

Do you have any suggestions to fix my touchpad?