Google search only category page

Hello @xinglin

Thank you for getting in touch with us.

This article provides a more clear picture of what might be happening than we could in our reply:
https://neilpatel.com/blog/how-to-rank-your-internal-pages-higher-than-your-homepage/

Please go through it. It is talking about the homepage but the same logic applies to the category archives as well.

With that said, while we are at it, I highly recommend going through the following guides to set up the plugin completely and correctly:

and
https://www.wpmediamastery.com/rank-math-seo/?utm_campaign=Rank+Math

Hope that helps and please do not hesitate to let us know if you need our assistance with anything else.