What specific thing(s) are you worried that USD will take a dive relative to?
Then once you have an answer to that question, that might point you towards what you want to be long.
How would buying Euros compare in terms of exposure?
The USD could take a dive against: yuan, eu, gbp, rial, gold, silver, platinum, WTI, SPY, etc.
Only a few of them will matter on a day-to-day basis if you're currently in the US with assets valued in USD.
Traders could start buying their oil using Yuan, for example. That’s not a theoretical anymore