Weppage scrolling via gesture on touchscreen not working

the horizontal scrolling on my webpage on touch screens is only working if you move the scrollbar not with the dragging motion on the touch screen. As the project is quite complex for me already, I have no idea what could cause the problem with the scrolling. Which factors could play into this? I am testing this on a screen that you can connect via hdmi and usb which has touch enabled. The problem also is when doing the scrolling motion, the content will be highlighted instead.

Thanks in advance even with this short explanation! I will be happy to share some code if I know more precisely what is helpful for others

Also might this be a problem with the browser in general (or on a certain os)? I am just super confused, what is going. I tested to connect this touch screen to my windows pc and a linux one and visited some normal pages like wikipedia. On the linux pc the scrolling motion was just highlighting stuff there too