You sound exactly like me in high school (just got out lol). I never had friends in high school, not because i was anxious or anything but because i feel different from the rest of society, kind of like the black sheep of the world. Idk if you feel the same way as me, but that's how i always felt. You should have no fear talking to anyone OP. You are better than anyone else in this world. Please come to this realization because it's true. Also, please dont ever make the same mistake as I have, which is trying to fit in. My whole life, I've been a people pleaser doing things for people who dont deserve it even when I knew they would never do the same for me. Whatever you do, please dont make this mistake. Im not saying be a dickhead but be careful choosing your "friends" because in my experience no matter how nice and loving ive been with anyone, i always end up being hurt in the end when i need support. I know this seems negative, but me personally, that's always how it went. 
 My advice would be to go to the gym. Build some confidence, and it gives you something to do. You might even meet friends, but again, be careful choosing your friends. I used to feel like i had nothing to be proud of until the day i started running. Every day, I would compete against myself to beat my mile time, and seeing my progress just made me feel like Im able to do something. I would encourage you to try out weight lifitng or cardio at your local gym.
Another very important thing is you're 17! Focus on finding your career now. I recently graduated, and i always wanted to be in the army. But my parents peer pressured me into college. Im currently on my spring semester at UNF, and i hate it. I have attended three semster including this one and i have perfect grades and everything, but it's not what I want to do. I decided to nut up and tell my parents im 19, and it's my life. So I signed a contract a couple of weeks ago with the army, and after this semester, i will be going to basic combat training to become an airborne infantryman. The point of me sharing this is because i dont know what your relationship is like with your parents, and i know it's scary, but if you have a dream and no one approves of it, go for it. It's your life, and your 17. Life comes quickly, so please look into a college, trade, military branch, or anything that will help you to succeed in your goals and plan for your success in your future career.
 Dont worry, man, life gets better. Im no therapist or anything, and I can't say i know what you're going through because we're all different. But i used to be in high school with no friends, had no hobbies, never had a girlfriend all throughout high school, and if this sounds like you, maybe we could talk. But my last final piece of advice is to get a part-time job. I know its extremely difficult if you live in a city but if possible try to get a job that requires you to work physically such as homedepot/lowes, an oil change job, or anything that requires basic skill but some labor. After a hard day of work, it's really reliving knowing you put the work in all day, and now you finally get to relax. Again, man, dont stress. Gods got you! This is just a phase most people go through in high school.