My smile and chin/ jawline looks ugly. Should I get braces, or jawline and chin fillers?

I don't like my chin when I smile or when I don't smile. I'm not sure whether I need braces, because in my opinion my upper teeth are too forward, or if I need to get jawline and chin fillers? If I get braces, what exactly shall I do? would making my smile wider and more backward change y face and make it prettier? Something about that part of my face makes me look masculine...I can't figure out what and how to change it. Any suggestions?