how to solve the CLS problem, score is 0.116

Hi Rua,

Try hosting Oswald font locally so that it loads faster. Reference: https://docs.generatepress.com/article/adding-local-fonts/

This tutorial is too complicated, is there a more convenient way, such as changing the font

You can try using a System Stack font through Appearance> Customize > Typography. Example: https://share.getcloudapp.com/7Kuj7qQ5