I think most comments misses the perhaps non obvious point. You may have some other fatal flaw in your resume. I think you should call up the recruitment peopl

I think most comments misses the perhaps non obvious point. You may have some other fatal flaw in your resume. I think you should call up the recruitment people to whom you applied and ask for feedback on your CV and/or application. They would know best. Then ask for tactical tips on how to get called. After exhausting these options, then maybe, it could be appropriate to ask about the significance of hobby projects.