I will add to some of the other excellent comments here: my time as a hiring manager at Apple and other Silicon Valley companies convinced me that I can never know the real reason I do not get a gig.
I saw good people rejected for stupid reasons, illegal reasons, and borderline reasons. It’s just a decision that is personal and largely irrational to the people who control the process.
Many people in a position to hire want someone they believe they can control. Do you come off as a doormat? Congratulations, you are more employable.
Many hiring managers want to be with attractive people. Are you attractive?