I can put car into all gears , when stationary . Pegeout 307 1.4
However car wont move - i.e. put car in first gear , release clutch and car stalls when the 'biting' point is reached . You can almost feel it resisting.
It could be stuck in one of the high gears. Jack the car up so that the drive wheels are off the ground, chock the wheels that are on the ground, front and rear.and see if the wheels turn when you put it in gear and engage the clutch with the engine running at tickover,.
If the front wheels do turn then jack up the back wheels chock the front wheels and check that the rear wheels can be turned by hand with the handbrake off.