Pick the best words to express your thought clearly. If you say it clearly, there is no need to repeat yourself. Each sentence should state something new or introduce a new detail to the previous idea.
Don’t take the approach of some middle school or high school students by just writing a thought in various ways simply to take up space or to meet your word count criteria. If something was assigned a word count, then there must be enough varying information on the topic.
It’s better to read something that is short and to the point than something that is going round repeating the same thought.