That displays a lack of geopolitical not to say historical understanding. The US was not “maybe” interested in the Pacific theatre, it was critically interested, and strongly opposed Japan’s imperialist expansion there. War against Japan was virtually inevitable there and the US would have been ceding enormous geopolitical influence to give Japan a free hand there. War against Japan was all but inevitable. As for Europe, there were many good reasons for the US’s involvement there: allowing Germany to win there would have meant dealing with an aggressive, illiberal and not to say completely evil superpower adversary who would soon have acquired nuclear capabilities. By intervening it secured its own interests and established itself as the predominant world power. Isolationism would have seen the US ideologically isolated and surrounded on all sides by tyrannical enemies. You’re anachronistically applying MAGA ideology to a completely different time and set of circumstances.