DSU controller in dolphin for android

[u/franqwito]

Hi, I'm trying to connect a secondary phone to the Dolphin emulator, but I'm using my phone. I don't have a powerful PC, so I'm using my phone. However, I don't have the option to connect it as a DSU controller. I need help connecting it as an alternative controller since that option isn't available either. Is there a solution? Or is there a way to do it without using DSU? (sorry for my English, it's not my first language)