cant save screenshot or seen pictures in my galery. also cant upload

can,t save screenshot or seen pictures in my galery. also can,t upload any picture to fb or messinger or share it anyware to the other apps, like viber or so.. it says there is no storage room avalible but my storage in both internal or sd cart are almost empty. and there is problem in opening and loading telephone after rebooting or restarting. it take long time to load all