OK, we all started out as newbies, so please don't take offense here, but from what you appear to be saying, I'm wondering if you've grasped how these engines function?
Since you mention a clutch cable, let's assume we're talking China Girl 2 stroke motor. Right?
This isn't a twist'n'go motor, so without the clutch cable installed to disengage it, clutch is permanently engaged. Naturally the bike WILL take off when started, unless raised on a centre stand.
Motor is designed to be pedal started (or pull started if so fitted) with the clutch lever/cable pulled - so how are you starting it?