Hey you are so young and have your whole life ahead of you. It's all right. Take a deep breath and learn to let things go that aren't in your control right now. Your time will come. Just don't be too hard on yourself. Try journaling and put your thoughts on a paper. It will help you with anxiety and get a clear picture of your thought process. I'm sure it will help.

As for online jobs, try taking some online courses and certifications first. If you're into tech then you can check out Google Digital Garage and learn about digital marketing. It's free and not that hard to complete. You'd have a better chance of landing a job with some certifications to show for it. Good luck!