(.....)
And also can we see another top project in the rank of 1 to 20 failed like that of Luna?
Big YES. This is already proven over time. We cannot say it is failed but it is slowly going to fail or be replaced by other quality projects or new projects. For example forked of Bitcoin, like Bitcoin cash, Bitcoin SV, and many more. At first they are on top, full of hype, pumps and dumps everywhere but after that, they are slowly going down.