The US Dollar will not collapse... at least not in my lifetime. The US Dollar has been the world's reserved currency for more than a century already, and right now, it's still far from collapsing.
Although the Chinese government and the whole BRICS are doing what they can to detach themselves in using the US Dollar, more than 80% of the total countries are still using it, and this amount is still way higher compared to the other currencies combined. The videos that you're watching are either anti-dollar (which is a weird term coming from me), or... I don't know they maybe just creating the video for the sake of content only. Right now, what the BRICS are doing has little to no effect towards the USD, and although I expect them to continue for the next years and decades, it will take time. De-dollarization is taking place already, but in a slow pace.
Will we see the Dollar collapsing? There might be a time in the future that it will collapse, but I don't know when it will happen. One thing's for sure though, it will not happen in my lifetime, or even in my generation.
If you look at the history of the world economy, it becomes clear that no state could dominate forever, there was always a moment when the player changed, I think that this trend will play out in the future, but if the dollar collapses, then I think it will happen last, and first all other national currencies will experience an even greater fall than the dollar, so if it makes sense to keep savings in fiat currency, then only in dollars, and perhaps a little in euros, but they will lose to bitcoin, due to inflation.
If there is a negative outcome for the Yen with its 30 year old QE programs, if FED failed USA with its endless QE then its also true Euro will be cursed with this debt till it fails. What began with one of the strongest banks in the world, west Germany for years has issued premium debt due to good governance has now switched to bail outs for Greece and corruption across Europe, the worst debt was bought to back Euro.
This all was done on purpose, Euro would have risen strongly vs dollar long ago otherwise. Its part of what makes the working wage so weak now and 2 people can barely pay the household bills in many families its a struggle even while full time employed.
Don't think that I am a conspiracy theorist or anything like that, but I see it as a coordinated action to keep the population at a certain level, when their income will be just enough to provide for basic needs.
Governments do not want the population to become wealthy, it is easier to control them, and if the population is in debt in large enough numbers, then it is even better, because they live in liabilities. I also thought that the euro should be stronger than the dollar, but this is not allowed to happen, and perhaps it will not change in the future, or the difference will be too insignificant.