I've never gotten a high school experience...

I'm turning 17 soon and I'm upset with how my teenage years have turned out so far. I haven't experienced having friends, school, exams, or even anything stable because of my family situation. It really bothers me how most media is surrounded with high school and it makes me feel anxious whenever I think about it. I just really wish my life hadn't turned out this way. I'd love to hear if anyone has any advice to make me feel less regretful.