Connecting Iphone 13 to portable touch screen without losing touch feature on the portable monitor

I have asus zenscreen Ink mb14 Ahd , and i need to connect my iphone 13 to it without losing touch feature on it i have bought lightining to hdmi adapter to it. The reason of having the zenscreen is portable with stylus and i can attach it to pc and when im out i can attach it to my iphone when student or possible client reach for help or comments on their designs as Im freelance architect . I dont need ipad i just need touch portable screen that i can connect it simple to my pc or my iphone if Im out if there is better solution than buying ipad will be great cause i have been searching for a while for other portable monitor with stylus that support touch feature when its connected to iphone but non. I dont want to move to android phones !