Yep. I knocked. Nobody answered.
Let yourself in then. Someone will be by shortly...
I am really surprised. I can think of a few possibilities. Either you didn't look in the right place, or you looked hoping not to find, or you intentionally looked in the wrong place, or you were looking for the wrong person to answer and didn't see who was at the door.
In the first place, G-d knocks. You don't knock. But you can seek. You may need a guide, but if you open your heart to His knock then He will guide you.
I don't know you so I can't know your experience. In my experience everyone who answers as you do intentionally knocked on the wrong door so they could claim it was G-d's fault. He really isn't that hard to find. After all, I found Him and I'm not at all special.
Shalom.