Why is Liu's Fiona not popular?

Replaced by new heat. Liu is a female singer. She participated in The Voice of China, which was very popular. On the other hand, "Fiona Hong Wen" is a song written by herself on Tik Tok, which is very interesting and novel and is liked by many people. Later, due to the emergence of different new popularity, this song was replaced by new popularity, which led to its fire, which is a normal phenomenon of information development.