K12 Clutch problem


I have a K12 manual petrol.

I can push as usual the clutch, it also comes back fine, but car won't go forward. Tried every gear including reverse.

I checked that gear stick is well tied to the gearbox: engine off I can put the gears and can hear them.

Brakefluid level is fine.

It is just like the clutch disk would be gone, I can't make up my mind what the problem could be.:unsure:

Any idea?