What about questions like “what’s up” “how’s it going?” “How you doing” etc in day to day conversation. Aren't they waste of time? As a person of Indian origin

What about questions like “what’s up” “how’s it going?” “How you doing” etc in day to day conversation. Aren't they waste of time? As a person of Indian origin I always struggled to answer these questions when I was new in the US. Now after so many years I have learned that the answer to all these questions is "good" or the question itself. because most of the time the person asking it is actually least interested in knowing the real answer! I honestly feel starting any conversation with these questions is waste of time!