Before saying what exactly happened, first of all, we need to understand how this stable coin works. Despite the fact that we all know that one stable coin equals one US dollar. So, in crypto, any stable coin requires a lot of funds to keep its price stable. Who finances the stable coin in order to keep the price stable?
Now comes to the question of why this happened to them. Well, there is no exact reason, but people are speculating that maybe the team has done something wrong with the fund. As a result, Luna no longer has enough funds to fund Ust Coin in order to keep its price stable. which is likely trustworthy. Because, as we can see from coinmarketcap, the luna valuation is lower than the ust valuation. So now if Luna dumps their price to zero, they can't even stabilize the price of UST. So that is the reason why Luna should have more value than usual. So now Luna needs at least 30B to get back on their game. But I don't think it is possible to gain trust from users again. Let's see what happens.