Try submitting applications first thing in the morning. It genuinely changed my response rate.
This might be coincidence, but after months of getting almost no replies I started paying attention to when I was actually sending applications. Most of mine were going out around 9 or 10pm after work, or on Sunday evenings when I finally had time.
A recruiter I know casually mentioned that they usually look at new applications over coffee first thing in the morning, and once they've shortlisted enough people they often don't even get through every application that came in later. So I figured I'd test it.
For about three weeks I started scheduling everything to go out between 7:30 and 9:00am on weekdays. Same resume, same experience, same types of jobs. I didnt suddenly become a better candidate overnight. The only thing that changed was when I applied.
I obviously can't prove that's the reason, but I went from hearing almost nothing to getting several recruiter calls and a handful of interviews. Maybe my applications were simply landing closer to the top of the pile while someone was actively reviewing them.
Again, not saying this is some magic hack or that it'll work everywhere. But if you're already qualified and not getting much traction, changing the timing costs literally nothing. It was one of the easiest things I tried, and surprisingly it made the biggest difference for me.