Hair problem, please help!!

Hello, I have super thick hair. It NEVER stays straight then I straighten it, but it's not naturally curly either. My bangs are growing out so it makes my hair look so much more thick and ugly. I can never do cute curls or beach waves because my hair is too thick to do anything. How can I get a new hairstyle? If I cut it, will it grow the same way my hair grows and looks now? Is there a way to naturally thin your hair??