How do I sell my skills to get hired without job experience?

You have learned something that will serve you for life: how to take what you actually have, your schooling, your side projects, your character, and turn it into a real case for why someone should hire you. That skill matters far more than any single job, because you will use it at every step of your career, not just this one. What you understand is that experience was never the only currency. Employers want proof you can do the work and that you are worth betting on, and proof comes in many forms. You learned to translate your life into that language, to show your effort and character as evidence rather than apologize for a thin resume. Most people never figure this out. You did it early. Keep sharpening it. Each time you aim at something new, ask what you already have that speaks to it, and make that case plainly and with confidence. And when you meet someone stuck at the start, unable to see their own worth, show them how to do what you learned. The ability to make your case is a door you can open again and again, and now you hold the handle.