Cubase and UR28M to create tutorials - audio problem.

Hi mates.

I need some advice as I am trying to do exactly the same things. Basically I am using Cubase 10 and UR28M. My plan is to create some Cubase tutorial using OBS Studio.
I have activated loopback function but I can’t figure out how to get Cubase output and my microphone to work together.
I am so frustrated as I cannot reach a final solution.

Any further help will really appreciate.