Vauxhall Corsa rough idle

Changing gears and accelerating starts to judder have to use the clutch slowly up then the car goes into the gear

Sounds like clutch on it's way out .

Find a long steep hill.... Drive up the hill in third gear, then accelerate (when safe to do so) and see if the road speed matches the engine speed. If it doesn't you could well have a worn out clutch (should smell of burning too).
Try this and repost.