First of all some mistakes u might make that i did too:
You cannot have empty passwords for the database, the config files dont support that.
After properly extracted the maps dont forget to copy them to the "SOMETHING_install" folder of your server.
Check that the realmd.conf file is properly pointing to them. By default is pointing to a "data" folder we dont have by default, u can use a "." in that setting to point to root folder and then gameserver will check for the "DBC", "maps","nmaps","vmaps".
You might have forgotten to properly set the enviroment variable for either OpenSSL or Mariadb
"OPENSSL_MODULES" - "C:\Program Files\OpenSSL-Win64\bin"
C:\Program Files\MariaDB 11.8\bin
TIP: if you try to execute either realmd. or mangosd and they instantly disapear, u can execute them directly from the command line to see a small trace of whats wrong with the instalation.
PIng me on discord if you need some help