You obviously have no idea that Germany tested Atomic bombs twice and provided much of the "ingredients" used by the Manhattan project to get their miles behind schedule project back on track . Negotiated by Allan Dulles and brought to the US by submarine .Interesting what Reseach uncovers .Yes, they most definitely would have used it. Hitler and Japan both were desperate for another win.
There was a reluctance to use nuclear tech to begin with....they weren't exactly sure what was going to happen. They also didn't want everyone to know about it either.
After the two bombs were dropped Everyone knew and capitulated. Wasn't exactly needed to be dropped in the Philippines. (They are expensive)
Also we were running short on fission materials. (More was in the works but breeder reactors only breed so fast)
And we also wanted to start work on fusion bombs. (Orders of magnitude more powerful....also more complicated)