How many resume's have you put out? 100, 500? When you are job hunting, figure that a well-advertised job may receive well over 100 applicants. How can you stand out?
Do you customize/tweak your resume and cover letter for each? Do you at least have a few versions that will work for slightly different aspects? You may be electrical, but do you do design, project management, power substations, computer, electronics, high-voltage, low-voltage, data centers, UPS, generator, etc?
Have you tried an internship? Some are paid and might hire you.
Lastly, it is not what you know, but who you know. This is true and especially difficult for engineers.