Hi Ambrellich,
You can do this by getting half of the screen value in float, after breaking the vector of the location captured from the Touch node. Then it’s simply by checking using bool to determine which side you want to register/activate the touch to swipe/look. You’ll need to pre-determine the finger index to use too, so it wouldn’t conflict with your virtual joystick.
This method in blueprint is available as an extra/free asset in my Virtual Joystick Minimalist Pack, available on the marketplace. Good luck.
Btw, quite interesting screenshot you got there.