issues with screen

So i’m trying to set up my kamvas 13 gen 3 to my macbook using a usb-c and it connects fine, however

1. The pen won’t work on the tablet screen only my laptop on extended display (the 2nd display is also a whole random display with no apps, different wallpaper etc the screen is also very zoomed in on my tablet.
2. It won’t fill the whole screen on the tablet when set to main display for my mac
3. If i want the pen to ‘work’ on the tablet i have to set my display to my mac as the main display however i then can’t use my mac and tablet simultaneously and the pen doesn’t connect right, i’ve callibrated it however it still doesn’t go where i want it to go
4. if i set it to mirror for kamvas 13 and optimise for kamvas 13 the screen is very zoomed in on my tablet and i can’t use my mac and tablet simultaneously. however when it is set to this one the pen does work properly

how can i fix this? oh and it’s the mac m1 btw