Did it not work after the first try and you gave up? Did it not produce any usable code that you could hand tweak or build off of? I want to understand your definition of "failed" here.
What's your definition of "working"? Do you consider it working, when you have to put more effort into prompting back-and-forth than writing it the old way?
I honestly think the people who love Claude were not super proficient coders. That's the only thing I can think of to explain why writing gobs of English and then code reviewing in a loop could be easier than just coding yourself.