I know entry level CPC-A jobs are not abundant. But if you are applying to those types of positions, here's my two cents.
If you are not being contacted for interviews, I would take a good look at your resume. Keep it relevant and no more than 2 pages. A good coverletter can also help, particularly if you have gaps or making a career change. I know there are some larger companies that put your resume in some sort of program, and if the program thinks you don't meet the requirements, no human even looks at your resume. If the issue may be your resume, having it professionally done is not the worst idea.
If you are getting contacted for interviews, then it is far less likely a resume issue. If I had been looking that long, I would ask colleagues, friends and/or family to do a mock interview with me. Let them be critical. It's only to help. Some candidates get very nervous, some candidates want to seem amazing but could come off as arrogant, some candidates can't answer simply basic coding concept questions. Maybe you don't realize you crack your knuckles or pick at your fingernails, or some other activity that could be offputting to the interviewer. During the interview be engaged and enthusiastic. If it's a video interview, make sure you have an appropriate location that is private without interruption. No one wants to hire a remote employee that gets interrupted 3 times during a video interview.
Sometimes it's just a numbers game. In the past year, I had a total of 3 open positions. 1 was entry level, the other 2 required experience in the specialty. For each of these positions, I received 160-190 applications within 36 hours. I close the ads after 36 hours because I just can't look at that many resumes. I glanced (literally for < 1 minute) at each resume which went into: 1) don't bother interviewing. Could be typos. Could be simply didn't have the experience I was looking for. Could be resume was a novel and I simply didn't have 5 minutes to read each of 190 resumes. Could be they didn't clarify who/when/where certification was from. Could be 20 jobs in 5 years. 2) email candidate to provide additional information about the position and instructions to call me and possibly to set up a brief video interview. If they didn't follow my clear instructions to call me, and instead sent an email, no interview. On the call, I asked some questions to just get a brief first impression. The first 30ish who had a reasonable first impression got video interviews (which I cut off at about 15 minutes). From that, about 10 got a coding evaluation. From the coding evaluation and first interviews, I picked a handful worthy of a second, longer interview. Now, it's very possible that candidate 60 who called me was qualified, and would have been a great fit. But candidate 60 was simply told "Sorry, all the interview slots have been filled." because I simply can't spend 2 weeks doing first interviews.
Try not to get discouraged and good luck.