My android phone won't free up space

[Android Central Question]

Hi. I deleted all of my internal storage, dache, dalvik cache and deleted apps.
But my device just won't free up space.
I'm running android 5.1 lollipop, without the adaptive storage option. It would be nice to have adaptive storage on lollipop.
I have 64 gb SD card inserted.
32 gb internal storage.
Rooted, xposed installed.
I'll be happy for answers.