Since I have started using Duolingo, I have learned a lot of French. And I have learned how to use and change doulingo settings, for example, you can change whether or not to have speaking lessons when you are learning, and whether or not to have listening exercises. A speaking exercise is where it gives a sentence. Then it has you repeat that sentence. For example, if you are in a crowded building or if you have a bad microphone, then it won’t pick up your voice correctly.
It will think you didn’t say it right, so Duolingo has a button that will disable that type of exercise for you for one hour. If you want to change it back you go to your profile then you click “settings” and there should be options for different exercises.