Ascent was one of the very first maps that we put together on VALORANT and was the place where we developed and refined much of the core gameplay that you experience today. Read all about how the map was designed and created: https://riot.com/3fYG10F
We're aware of some issues with the ranked system aggressively demoting players and are actively fixing. These demotions won't last long-term, only the displayed rank should be impacted, winning a game will put players back in the correct rank again.