Replace the water pump.
Get a new car
Look for a leaking hose, water pump, or raditor find the leak and fix it.
You can try putting some "Stop Leak" in your radiator, but the only proper way is to remove the water pump and replace the gasket and the Pump too if it's leaking.
if the water pump is bad most vehicles have a wheep hole as a sort of warning. if this is the case replace the water pump and any seals relating.
Check out the water pump or heater core where does it leak? DB
your water pump has to come off then you need an new gasket put back on
You have to determine the source of the leak then decide on how to fix it.
Look inside the car above the fuel pump for an access panel. If there is none, you will have to drop the fuel tank to fix the leak if the leak is at the fuel pump. You need to determine exactly where it is leaking.
you go in the car and finger yourself