What should I do? I don't think I will be very good at settling down.
Why do you think you won't be good at settling down?
I'm still young and I enjoy having my freedom.
I know that you're still young and want to live an exciting life, but you should think about your future. You don't want to exclude a potential life partner because you don't feel able to settle down. Keep yourself open to possibilities that could alter your future.
That's just not fair. Or romantic.
It's understandable that you don't want to settle down while you're young. However, you shouldn't just assume it's not for you. Finding someone to spend you life with can be very rewarding, as you won't be young forever.