Due to the vastness of our universe even statistically speaking there is high chance of Intelligent Life on other planets.
But the same statistics apply to us. Given our 'poor' technology in space travel, we have very limited ways of finding other lifeforms only in our neighborhood. Whereas other civilizations with high technology advancements can increase their search radius. However given the same statistics of finding a needle in a haystack, it will take time for us to get contact from another Intelligent Civilization.