New band i've mixed so far (metalcore/deathcore)

I like the vocals and the drums. But the guitars, to me, lack low end and sound very dull and flat. Some of the more experienced guys here will give you better advice and tell you how to fix certain elements, I'm not that experienced. But hopefully what I said will still help.
 
I like the vocals and the drums. But the guitars, to me, lack low end and sound very dull and flat. Some of the more experienced guys here will give you better advice and tell you how to fix certain elements, I'm not that experienced. But hopefully what I said will still help.

Yeah thank you man! I've tried to make guitars sound more agressive, but i couldn't make a good low-end and wide sound.
Hope somebody could tell some advices!))