There are various synonyms for the phrase "were concerned about", which is commonly used to express worry or anxiety over a particular issue or situation. Some possible alternatives include "were troubled about", "were apprehensive about", "were anxious about", "were worried about", "were unsettled about", "were bothered about", and "were preoccupied with". These phrases denote a level of unease, fear, or uncertainty about something that may impact one's well-being or the well-being of others. Using different synonyms can help diversify and enrich one's vocabulary, allowing them to express their thoughts and feelings more effectively and precisely.