Handbrake holding on one side!

Hi everyone, new here.
I'm having a problem with my 95 EG3.
My handbrake isn't working, even when I pull the lever up as far as possible.
I have took of the cover and can see that the cables are holding unevenly.
When the car rests on the handbrake, I can feel that It lifts on one side, doesn't on the other. causing the car to slant from passenger side to driver side.(btw they are drum brakes at the back)
Any Ideas what this is?
Cost to fix?
Easy to D.I.Y?
If there are any information on any other threads that would be helpful.
thank you
I'm having a problem with my 95 EG3.
My handbrake isn't working, even when I pull the lever up as far as possible.
I have took of the cover and can see that the cables are holding unevenly.
When the car rests on the handbrake, I can feel that It lifts on one side, doesn't on the other. causing the car to slant from passenger side to driver side.(btw they are drum brakes at the back)
Any Ideas what this is?
Cost to fix?
Easy to D.I.Y?
If there are any information on any other threads that would be helpful.
thank you