You read this part?
Parts Request
If you need a part that is not on the website, just get in touch and we can order it in for you
Of course, you can only get parts which Framework themselves sells separately. You may have to buy the touchpad kit which includes a cable. https://frame.work/products/touchpad-kit?v=FRANFT0001
Can you post a picture of the cable you broke?
If you need it, there are some 3d models of the Framework laptop here https://github.com/Captain-Pumpkinhead/Framework-13-Vanilla-Reconstruction