There are a lot of reasons, but culture is definitely high among them. China has spent a lot of time and money over the years trying to improve their football presence but it hasn’t been working at all.

https://www.dw.com/en/china-pivots-football-focus-from-mens-to-womens-game/a-63763569

https://www.dw.com/en/how-china-wants-to-become-a-football-heavyweight/a-63652825