The phrase "a greater level" means something that is at a higher or more advanced stage than before. It could refer to an increase in intensity, quantity, quality, complexity, or some other characteristic. For example, if someone says they want to take their fitness training to the next level, it means they want to improve and advance beyond where they currently are. Similarly, if a company wants to raise its profitability to the next level, it means increasing its earnings from what they were before. In essence, "a greater level" implies an increase or improvement in some aspect of something that is already present.