Softer than before what? If clutch was serviced possible the slave cylindar was opened and air got in the system.
Absolutely. You drop the engine, unbolt the old clutch, bolt in the new one...put the engine back in the car and adjust the clutch pedal. The details are a little more than that, but on a Bug you should be able to do it in a day if you've never done one before. If you have done one before, a quiet Saturday morning will more than cover it.
A clutch does not go into gear. A clutch engages, Normally if a clutch fails to engage it is because it is worn. with a worn out clutch you are able to start the car in gear without your foot on the clutch and the car wont move. Normally before this happens you will notice what is known as a slipping clutch. A slipping clutch means that the engine is turning faster than it should to keep the car moving while in gear. once this starts to happen it does not take long for the whole show to come to a stand still.
You need to hit the cluch before you change gears
If your car has a manual transmission, and it over rev's in every other gear as well, than no doubt it is your clutch. Other wise it is your transmission.
i need chage the clutch of my car
It's a form of speed where there car is at full speed before it reaches it's climax and transitions into a stage 3 clutch.
Clutch pedal
The clutch pedal.
no because you need the clutch to start and stop the car
Yes, You just have to select reverse gear before letting go the clutch.
if there is a clutch adjustment on car, adjust the clutch if no adjustment, you will shortly need to replace the clutch
If it is a Manual shift, you more than likely have a broken clutch or clutch linkage. If it is an A/T you have transmission problems.