Okey.. Here is an update of my problem...
Front brake seem to have the same issue as the rear.
When I deattached the front calipers from the discs and took away the pads
there was no oil leaks, there was only some dust.
At this point I tested to "pump" the lever so that the brake pistons should move outwards,
but it just went 1 mm out and then went back again just like the rear brakes.
I think that it could be the mastercylinders both front and rear or
it could be rust on the inside of the brake pistons/calipers?
I donīt know , any ideas please?