Chosen Solution

i would like to know if i can just use a heat gun and peel off the broken glass from the lcd?

Here is a video on it. https://www.youtube.com/watch?v=GUAbMKRv

The glass only repair is difficult on this phone. The chance of you breaking the lcd is very high, especially, when you had never done it before. But you can get it professionally repaired here: http://www.ebay.com/itm/LG-G5-Cracked-Br