@peter I had a similar experience with Duolingo and moved to Italki teacher, but after some time decided to create an AI tutor to practice speaking, it works in an interesting way, not better or worse than a real teacher 🤔 if you are interested in checking this experience - I'm making some closed beta for free ok https://enkitalki.com
Enkitalki - Boost your speaking with AI

Practice natural conversations and improve your language skills with our AI-powered tutor. Get instant pronunciation feedback and learn from your mistakes.