The Job Interview: Why Don’t They Choose Me?

Since it’s on my mind now, I’d like to talk about the job interview.
It’s taken me a long time to come to a few realizations about job interviews. I’ve been on a lot of interviews over the decades, but I know there are still a lot of things I need to learn (and practice). Needless to say, I didn’t get the majority of the jobs I interviewed for. Why not?! What’s wrong with me?!