try studying as much of the material as you can, if you fail thats ok, it shows what you need to learn/work on. stress aint gonna help so try taking 5 minutes out of your day to stretch/meditate. The future is an odd place and its ok to not know what ur gonna do, instead of planning everything focus on basic things like a job and what collage you want to go to. (if u wanna go to collage)
theres always ppl online & there's imgflip communities like the LGBTQ stream that are really cool, there are also counslers n stuff aswell online also! :)