In Spanish, there are several ways to say 'sorry', depending on the level of formality and the situation. While 'disculpa' ( excuse me) is a common way to express regret, it can come across as too casual in formal settings or when apologizing for a serious mistake. To sound more fluent, consider using the following alternatives: 'Lo siento' (I'm sorry), 'Me disculpo' (I apologize), or 'Mi disculpa' (My apologies). However, be careful not to overuse 'lo siento', as it can become repetitive and lose its impact. Instead, mix it up with other phrases to add variety to your apologetic tone. For example, if someone cuts you off in traffic, say 'Disculpa la inconveniencia' (Excuse the inconvenience) or 'Me alegra que hayas llegado a tiempo' (I'm glad you arrived on time). Remember, the key is to be sincere and specific with your apology, taking into account the context and the person you're apologizing to.