If you can't hide your sadness, pretend to be happy. What song is it?

You and I are lonely at night. If you can't hide your sadness, then pretending to be happy is the lyrics in "I am lonely at night". The original lyrics are, if you can't hide your sadness, pretend to be happy. Nobody cares anyway, so why complain everywhere. The original song is Damei, and the song was released on May 28th, 2022.