Possible. Wouldn’t count on it though.
More likely we are alone than first.
People once believed that if you traveled too far out to sea, that you'd fall off the edge of the world, and that the sun revolved around the earth.
The mind-boggling numbers involved with this question argue in favor of a universe that is teeming with life. The Milky Way is but one of billions of galaxies in the universe, each possessing billions of stars, and trillions of planets.
We don't yet have the technology to fully see all of the planetary systems in our own galaxy, let alone the billions of others out there.