You have been putting yourself out there and you have not had any luck. You only get the “don’t call us, we’ll call you” line or you are not getting past a first phone interview. What should you do? Step back and re-evaluate.
Look at it this way, what would you do if you wanted to find a spouse? BTW, I do not recommend this type of mission but I do understand why people would embark on such an escapade. Check out this Ted Talk from Amy Webb. She is a bit obsessive about it but I think you get my point. Step back and look at what others are doing that works.
Maybe you need to change what positions or companies you are targeting. Do you need to change your resume? It could even be that you need to submit more applications at companies. Whatever it is, start stepping up your game.
Insanity: doing the same thing over and over again and expecting different results.