It's fantastic that you are getting into art now. I know there must be a lot of anxiety and fear of failure with decisions like these. But if this is truly a passion for you, I recommend to just try your best and don't be afraid. Art as a career or even as a hobby have so many avenues that you can go down, and it is a lifelong thing.
I for one hope you do get in, but if you don't, there are always more options. Don't give up before you start! Hard work will never not be rewarded.
I personally only really into art as a serious endeavour in my late teens. I changed my path from an engineering major to wanting to get into digital design but I wasn't accepted for my university of choice. Dropped out 1st year for another university. Went soul-searching for a year. But now I'm very satisfied as a professional tattoo artist. So don't be afraid of failure, it is just an opportunity for growth.