When I was thinking about college I wanted to go into music, or art, or computers, or teaching. I ended up picking computers because it was the one with the most job prospects and I figured it was hard --- I like a good challenge! I ended up with an undergraduate degree in Computer Science, and then ended up making web pages in the Dot-Com 1.0 days. Interesting thing: the web is one of those things where everything intersects! You have to know computers to make a good app, you have to know design to make it appealing, and it really helps to know music to help add atmosphere.
In college I ended up doing artsy things with friends. So I didn't take any art classes but I got exposed to it. Later in life I ended up doing art + high tech events, so I got the best of both worlds.
Also in college I got exposed to audio editing and music. That led to many other things like bands and music software. Having a solid day job helped feed the music habit (because making it as a musician can be really hard). And that led to opportunities like traveling for gigs, running music festivals, sound effects design, and more.
I guess it's OK to not know what you want to do. But, it does help to find something you're good at that has a good career and focus on that as the primary goal. Everything else can be supported by that. Good luck!