My Iphone is broke and can't fix it any suggestions?

I got my Iphone at Christmas and it was working fine and then my brother cracked the screen. It was still working fine and then a couple days ago it started chipping on the top and now all of the glass above the screen is gone. When that happened my touch on my screen like went away and now I can sometimes touch some places and it works but for the most time when I touch it, it doesn't work. I need to know if I should spend a whole another 200 and get it fixed or If I can find any way to fix it thank you!

Same happened with a friend of mine, she got it fixed because there isn't another way, unless you buy a new one.