Chevy Impala Engine Shake When Idle

I recently had liquid leaking for my car and realized that it was the water pump.
I changed the water pump and then a couple of months later my car started
overheating. I checked the fluids and there were none so. I replaced them. A
couple weeks later I had a overheat on the freeway that cause my car to stop.
After it cooled down it started again but now when idling my entire engine
shakes. There is no fluid leaking from the car but there is some bubbling weird
noises from the engine as well as overheating and shaking when idle.