It is true that noise pollution indeed causes
Since this is a part of your personal opinion, it should not be located in the paraphrasing sentence/s. This should be incorporated into your writer's opinion sentence for more scoring effect. The prompt paraphrase must never be altered in a manner that would affect the original topic presentation, such as when you indicated the thoughts above.
Then, the government should create strict rules
Another paraphrasing error. You must indicate that other people believe this, it should not come across as your personal opinion since it was made clear in the original prompt that "some people" thought of this idea. By altering the reference point of the speaker, you will continue to lose points in terms of task accuracy.