Student desperately searching for a part-time job, with no luck. Need advice

Hey everyone, I am a 20-year-old student about to start my second year of college in a few weeks. I feel miserable because aside from working on personal projects for my portfolio, I was completely unable to get a part-time job. I did years of sports journalism and tech support in my country from a very young age, and I also have experience selling and troubleshooting software - except it didn't happen here!

Months of searching on Seek and Indeed have yielded nothing, not even an interview. I've been over and over my resume and apart from listing some skills, my high-school graduation, my previous work, and my ongoing college degree, I don't have a lot to add. The format seems fine, my speaking skills are pretty good too from years of interviewing players in my field. I handwrite every cover letter I send.

Please advise me on what I can do, I really want to support my parents more than I do now, I have no qualms working literally any kind of job. Thank you.