The term "de-dollarization" means to start using other currencies besides the dollar or gold to conduct international cross-border transactions, especially oil trade.
Since Nixon decided to abolish the link between the dollar and gold, USD linked to oil and the petrodollar was renamed.
Therefore, most countries (80%) of the world's oil is sold against the dollar, and the lack of this hegemony will affect the United States because domination in the world means economic, scientific and military superiority.
The stability of the dollar as a currency for trades between countries and its use of more than 50% for trade between oil and about 68% as a reserve will force all countries to be affected by inflation in the United States and thus ensure that all these countries share the burden of public debt, including ensuring the supremacy of the United States.
These reserves are still far from affecting USD, perhaps we need a III world war to reduce this effect, so "de-dollarization" is still dreams.