When I took out the water pump I seen that the impeller was broken and it was no peaces that fell out what should I do
If you have a broken water pump, it must be replaced. This is the heart of your coolant system, without which your car will almost certainly destructively overheat. With poor flow, local hot spots will build up and likely break your car much worse than a broken water pump on its own.
It's hard to anticipate the specifics but I know that on my car the turbo would almost certainly fry first.