Touchscreen - or the mouse scroll wheel doesn't work

I have installed ubuntu-frame with wpe-webkit-mir-kiosk on a PI 4 8GB RAM - unfortunately it doesn’t work properly with a 27’ touchscreen - or the mouse scroll wheel doesn’t work either - what can I do there… resp. - I also installed ubuntu-frame-osk - everything doesn’t work for me - is there a comprehensive installation guide anywhere? Or is it all just an experiment and I’m not getting anywhere anyway?