Sow in very soft soil. Do not completely cover the piece of carrot with the sprouts. Do not add water to the earth. For a while. Although the soil should be a little damp when planting. Stay firm and don't add water for a few days. I can't say how many days because I don't know your environment, but that's how you learn the best way. After you see that the pranta adapted to the earth in a few weeks, you can treat it the same as the others, in relation to water.
I hope you get these tic that I learned little by little.Hello my dear @marblely. What you say also happened to me. But I kept trying with other ways and I succeeded.