Can't move cursor while typing/using the keyboard

Hello,

So I have this problem where I couldn't move my cursor while typing when using my touchpad. I looked at a lot of websites and they all tell me to go to mouse - device settings - settings - and then tick palm check. My problem is just that I don't have anything like sensitivity or anything. I only have Overview and Buttons in my settings. Are there any other way to fix this problem? It's really bothering me when I'm playing games that require both the keyboard and the mouse.