I am wonder if the allies would drop their nuclear bombs on germany before japan if germany still was a problem when they had their nukes ready. I know that they had a germany first policy but it still dont feel realistisk to them to nuke a place that they had a land border with. I am thinking of 1944-1945.
Getting a satisfying answer to "what if" question like yours can be difficult. The closest available is the comment chain in Was there ever a thought or idea by the US goverment to use the atomic bomb during WW2 on germany? by u/restricteddata which discusses the various reasons why such an action could not happen, did not happen, and what challenges existed.
This is from the FAQ, specifically militaryhistory/wwii/usa/the atomicbombs.