I think your problem is you're applying for a job that anyone can do.
They probably get 10 applications a week. Plenty of people in their 40's with 20 years of work experience.
What is your degree? Maybe try something more specialized.
10 appications a week? Try 10+ applications a day, especially for an entry level job with such high turnover. My first job working at a grocery store when I was in high school, the store email was slammed with job applications, and my manager on a good day would look at 2-3. Of course it varies per institution but you get the drift.
Landing a job is a total lottery, I have 8 years of work experience, 3 pertaining directly to my desired field, held a job in some capacity since I was 17. I've completed my Bachelor's degree and attend a top 10 university for my MBA.
I'm currently in the process of searching a new job, as I've grown sick of my current one. I've personally applied for 200+ jobs and partnered with 5 recruiters in the past month and a half. I've gotten less than 10 callbacks for interviews. The bright side is I have 2 interviews scheduled at an industry leader on Tuesday but if that falls through I'm back to the drawing board.
The first thing I'd work on is your resume/cover letter. If you want I can take a look at it, but as I'm preparing for my interview I won't get a chance to get any comments back to you until late next week. If you don't already have a cover letter I'd get started on that too, something you can simply C&P in the body of a paragraph, and most job sites require you to add one as well, at least in my industry. Once you have your resume/cover letter down, it's just a matter of firing them off. Glassdoor partners with TopResume for a free resume critique, I'd take advantage of that in the meantime. Take a look at some of their examples in the sidebar here:
https://www.topresume.com/?action=casestudy&case=eric
Industry contacts go a LONG way. My current job was a result of an employee referral, if you know someone (family friends/classmates) that works at the company you're looking to apply at, ask for a referral if you feel comfortable. Hell I've gotten referrals from people I've PM'd on reddit, it's all about who you know.
Don't get discouraged, just the fact that you got an interview means they were at least interested, which is a start. Keep your head held high and don't get discouraged, on to the next one. It's easy to get frustrated and impatient when searching for a new job, just gotta take it a day at a time and continue improving your resume/cover letter/interview technique.