How to get allocated on a project !!!

Hi I joined cognizant in February 2022, so I am a PA level with 2.8 years of experience. I am on the bench now, whenever I try to apply on TMP iaspier it's always getting rejected. I have also tried to reach out to the hiring manager mentioned on that particular SO still no response. What should I do now? How do I apply or reach out to HM's.?