We’re trying to. Trump is even going to end NATO (and hopefully ANZUS, the Japan MDA, and the agreement with Taiwan). It’s time to stop interfering in other people’s affairs. We should stop messing with Ukraine too and maybe we will within the next few years.
Once the Iran misadventure ends we can drop the whole pretense and you can do your thing and we can do our thing.
I do not know who it is "we", but Trump is certainly NOT trying to stop sending soldiers abroad. Instead, it is using them to attack Venezuela, Iran, Cuba, boats on the see cause killing is fun and to threaten Greenland. Iran is completely pointless and expensive war in particular. Also, pressuring Ukraine to give up more territory then Russia took is NOT "stopping to mess in other peoples affairs" either.
Also, what Vance is doing in Europe is not "stopping to mess in other peoples affairs" but instead "meddling into politics trying to make far right happen".
Trade war with Canada and numerous attempts to "punish" other countries for prosecuting corruption are also meddling.