s7 edge internal storage almost full

[AC Question]

s7 edge. came with internal storage almost full. moved some app I installed to the sd card. Lots of unwanted apps can`t be moved or deleted. Tried to extend the storage onto the sd card but all advice on the net does not work. Seems to be a major flaw in the system.
Regards

 

[anon(632115)]

Not a flaw but the way in which apps are compiled