Not to turn this into the NGPA thread, but leading with a reference to sex and race in the first sentence isn’t productive towards your goal. Over 90% of every UAL class is white males. United also hires people of every age.
Back to the question: Make sure you have applied at more than one airline. For some reason people just don’t get called. Maybe you spelled your email address wrong. Maybe the computer doesn’t like xyz on your app. I have had friends with ONLY a UAL app in for years get called by FDX a week after putting in their app. They make lots of money now.
Best of luck.