High schooler with a background in IT and AI: How do I break into freelancing without a portfolio?

Hi! I'm new to this, and I don't have a portfolio yet, although I know a lot about IT. I'm a school student and really need to earn some extra money. Are there any ways to get my first orders? Which exchanges are best for beginners? I don't even need a lot of money, considering I can work 5-6 hours a day. $30-35 a week is quite enough for me; it's not a small amount in my country. Of course, not right away, but still... Considering I know how to make websites, JS, Python, and C++, I'm currently actively studying database design, integrating AI, and creating bots for Telegram. One of my latest projects is a website with AI for fact-checking; I trained the AI ​​myself. I know how to do a lot of interesting things, but I have no idea where to go or how to get my first orders. Does anyone know and can help me with this? And how much money can I expect to earn in the future, spending 3-4 hours a day?