At first I tried just moving every app I could to my SD card, and I already transfer and delete every picture and video I have on my phone asap. So afterwards I wiped cache a few times. Finally I completely wiped and reset my phone to stock and still only freed up 1gb of space. I then flashed the negalite ROM. With this new rom and the core set of apps I use, all moved to the SD card, I have 829mb of internal memory free.
I understand that I really only have 8gb to play around with, but this screencap shows that I have 7gb being taken up by miscellaneous files, yet when I check what's in there it does not add up to 7gb (nothing below those files goes above a few hundred kb tops). Is there any way to free up more memory without deleting literally every app I have? I don't think I even have that many frivolous apps.
So to summarize, my phone is a sprint s4 SPH-L720 with 4.4.2 running the Negalite rom, with only 800mb/16gb internal free, trying to free up more. Not sure if its a memory leak or what.