the USA was not the major part of in saving us from the Germans

Strictly speaking, they were more pivotal in the Pacific front of the war, where they saved China from Japan.

But you've really got your blinkers on if you're going to ignore the Lend-Lease program, which provided the Soviets with 400,000+ trucks, 14,000+ aircraft, 13,000+ tanks, and 4.5 million tons of food.

Like, it was a team effort. No single country single-handedly won (or lost) WW2. The real tragedy of the war's end was our inability to disarm and diplomacy our way to a real unity planet. In that sense, everyone ultimately lost WW2.