Even if we went without, the rest of the world wouldn’t; their needs would still affect energy prices in the US - that’s what it means to say oil is fungible. If we lower US demand, then yes, the price goes down. But using our own doesn’t change the global price; it just helps our balance of payments.
As a global economist I’m not sure you are going to get a real paying job....deep thinking....how about this....if we throw a 10 million barrels a day into the market....reckon that would make a difference...?? HELLO