How should I structure my AI output practice to sound less like a textbook?

I'm tired of language apps that just make me click bubbles—I want to actually produce Danish. I’ve started using Chickytutor.com to simulate scenarios, but I’m worried I’m picking up 'robot Danish.' How do you prompt an AI to give you feedback on whether a phrase sounds like something an actual Dane in Copenhagen would say, rather than just grammatically correct textbook language?