is it possible UST recovered ?
Not at all. There is not even remote possibility of its recovery because Luna foundation has lost confidence of investors which is very important for any business to keep running. UST was based on algorithmic based mechanism which failed to work and ultimately collapsed becuase it was not backed by Fiat currency.The lesson we learned from this crash is that any stable coin which is not fully supported by Fiat dollars or Euros is vulnerable to crash like UST.
In addition, currently the CEO of LUNA is focusing on developing LUNA 2.0 which is currently not even fully developed. even LUNA has become LUNC to distinguish the new and old Luna. It's very difficult for the CEO of a project to develop 2 different projects. While it is possible to repair the UST, it costs a lot of money. besides, instead of fixing it, the CEO of LUNA could develop UST 2.0 or something. however, there is currently no good sign of UST development at this time.