Complex sentence: Sakuno is attracted towards Ryoma and has feelings for him and she hasn't had a chance to tell him due to her own shy nature, some degree of bad luck and the meddling of other people.
Split into simpler sentences: Sakuno is attracted towards Ryoma and has feelings for him, she hasn't had a chance to tell him due to her own shy nature. Some degree of bad luck and the meddling of other people.