On our main download page we have instructions on how to set up repository and install packages for Raspberry Pi OS 12 (also vanilla Debian 12, arm64) for versions 6.0 and upcoming 7.0, but not current 6.4. It would be nice to also provide precompiled packages for 6.4, as not everyone would want to install Zabbix components in Docker or figure out how to build it themselves as a workaround.