Of the estimated 100 billion galaxies in the observable universe, only one in 10 can support complex life like that on Earth
10 percent of 100 billion is still 10 billion galaxies. That's a lot of real estate. Even if you apply all the other characteristics that give rocky planets in the habitable zone of their star billions of years to evolve life. There are features like having a Jupiter in a circular orbit instead of an elliptical orbit or a moon that creates tide pools. That's a lot of habitable planets and a lot of potential for intelligent life.
Netflix has a really interesting series narrated by Laird Close called Life In Our Universe that covers the topic in great detail.