You dragged your footage onto the create new comp button, then dropped the camera tracker on the footage? Great.
Now tell us about your footage. Format, codec, length, size, etc.
What is in your footage? Some footage is impossible to track as it is. You may need to mask parts of it out.
It is 7 seconds long shot on my iPhone in an office workspace
Not likely that you will get anything out of it due to the strong distortion, rolling shutter, compression artifacts, poor lighting and the clip overall being rather short. such stuff requires to be shot properly in the first place.
Ok Thanks for the help!