I very much disagree. The data I have seen does not support your conclusions.
BRICS nations have been claiming for 2 decades they were going to abandon the dollar. Haven't done it yet. OPEC even before I was born. Still using the dollar. Even if they did is everyone going to t stampede over to their less secure, even more easily manipulated competing currency of choice?
Our NATO Allies are polling well with their satisfaction with the alliance, it's overall benefits, and of their overall opinion of the USA right now. They are mostly positive and see it as a positive association. This helps us with mutually beneficial economic trade, and also helps reduce our collective defense costs.
I'm not saying all wars can or will do this, but we are likely getting a huge long term bargain out of this in reduced future defense costs while Ukraine goes all the fighting. If Russia becomes a shell of its former military power for the foreseeable future, that's less we need to spend in mitigating that threat. The more mutual defensive alliances we are in, the lower chance in general there will be destabilizing and economically destructive wars involving any members. That's good for trade, which is good for us.
Don't be so quick to focus on only a subset of data or on the short term. We all know Biden sucks, and his administration is corrupt, but it doesn't follow that means we should be against everything it does reflexively. We also no longer live in a world where isolationism works. It just doesn't. It is less efficient and actually less secure.