I found a clutch cable and changed it myself today. It was not a very easy job because I had to remove enough parts to have space to work.
After installing the new one, I adjusted the height of the clutch pedal, put the engine forward, pressed the clutch and tried to enter first gear.
Unfortunately I can not put speed, none of them.
Βut I can not find a throttle cable anywhere.
I will try to find someone to build one. Maybe I'm lucky