Entry Level Product Manager

I don't understand what I am doing wrong. I want to get a job as a product manager/owner. I have a bachelors in International business management and a masters in Data science and AI. I know two languages Greek and English, I do not need a visa sponsorship. I have experience half a year as a Marketing Officer in a tech company and 2 years as a Marketing and operational manager of a school. I was the co-founder of two apps and worked for their development, strategy, design. Why is it so hard to land a job? I know that I have not worked directly as a product manager but I am applying to entry level positions. Any suggestions?