MY FIRST GROW

It's been ten days. They have all grown up safely and look big and healthy. Only one of them is clearly growing in a strange way. Is it due to the fact that we don't have enough coco medium, and she is growing in culture soil? There are a lot of things to worry about, but every day is fun because it's all new to me! Please let me know if there is anything you can tell me about the lackluster plant. Translated with www.DeepL.com/Translator (free version)