Wasn't Iran supposed to be a dangerous country. They've not managed to do any real damage it seems to Israel or any American ships?

Iran has a very weak conventional military. They specialize in insurgencies & blocking the strait of Hormuz. Even with far superior technology, there's very little the US can do to stop them from stockpiling mines and drones in random bases hidden in the mountains and firing them at soft targets. Likewise it's pretty tough to stop the Iranians from getting on speedboats and dropping mines in the water at random.