I need help with freelancing and working online please.

Ok so I'll explain my situation. I'm a 18 years old boy living in Italy and studying. I still live with my parents but as I said I'm 18 yo so I really want to find a job, save money for a car and a house and just go out with friends, the problem is that if you don't live in a big city here it's really difficult to find a job, specially with no experience and a complicated schedule like mine since I'm a student, so I decided to try freelancing / working online, I just can't find the right way to do it.

I speak Spanish, English and Italian and I'm really good at math and physics, I created a fiverr account but haven't got anyone to hire me, I also tried working for rev but I didn't pass the test so I'm asking you for help, I've told you what I'm good at and I would like you to tell me real ways to earn money online, doesn't need to be fast but it must be real and possibile to actually do it. Also tell me ways to promote myself on whatever I do. Thanks in advance and I hope someone could help me please 😔🤞🏻