It works to delete "/opt/homebrew/var/mysql" for Mac M1. but I do not want to lost all my data. As old bird, I checked err logs (located at /opt/homebrew/var/mysql). it turns out mysql version problem. like "[ERROR] [MY-014060] [Server] Invalid MySQL server upgrade: Cannot upgrade from 80300 to 90200. Upgrade to next major version is only allowed from the last LTS release, which version 80300 is not."

God knows when mysql update version (by who), but any way, I installed old version by "brew install [email protected]". it works again.