i thought it is because parazites but i dont know how to solve it.
Parasites? You have got to be kidding.
How ARE your switches wired? You are not using the internal pullup resistors, so you MUST be using external resistors. Show how the switches are actually wired, and explain why you want to use more hardware (external resistors) than is needed.
ileriButton = digitalRead(ileri);
It's generally a good idea to use Pin in the name of variables that hold pin numbers, and State in the name of variables that hold pin states. Using Button in the name of variables that hold switch pin numbers or switch pin states is not a good idea.