How can I make myself look nicely put together?

I'm a 21 year old Hispanic female , and I wear a lot of activewear sweaters and sweatpants when I go out . I don't really know what to do to my hair , if I put my hair down I have to put it up , if I have it up I just don't seem to like it . I need someone to help me please . I just want to look put together ❤️ please help