How many resume have you sent? FYI I have sent probably more than one thousand resumes in my entire career and got rejected for numerous occasions.

I am an engineer and right now at my skill level, I have been many interviews when I am far far far more competent than the hiring mangers and their engineers and they reject me for my talent.

In this world, you just need some luck.

I know talk is cheap, and I suffered lots of set back and I understand your feelings.