Maybe you didn't get the job because you weren't a good fit for the job, or maybe you didn't get the job because the hiring committee simply found someone else

Maybe you didn't get the job because you weren't a good fit for the job, or maybe you didn't get the job because the hiring committee simply found someone else just as good and flipped a coin. Sometimes there's a good reason for something, sometimes it's just happenstance. Trying to make up nonsensical reasons for things is pointless.