Most people don't know the reasoning behind BRICS and the refusal to use the $
It's pretty simple, the US $ is not stronger but the local currencies are getting weaker.
The weakening of the local currency is caused by several conditions that occur and vice versa with the strengthening of the dollar is also influenced by several events so that this is slightly more detrimental to some countries. But the problem is how strong BRICS can provide certainty for the journey of the local currency who joined them and it feels difficult to beat the dominance of the dollar if the strength of BRICS itself is not that strong.
America has created dependency for several countries and it is difficult to break away from the dominance they have done. Most countries do expect the freedom to determine the direction of their own currency and each country also wants the growth of the local currency to continue to strengthen so that it can be stronger but that is difficult to implement.