Logback to Elasticsearch through yaml or properties
That is possible. The configuration would go to the application.yml file (see https://springframework.guru/using-yaml-in-spring-boot-to-configure-logback). Having many services to configure this may not be a solution for you as the configuration gets mangled with each services configuration.
To keep things separated you could use groovy (https://springframework.guru/logback-configuration-using-groovy), if you have it, or try to incorporate a logback.yml via external configuration files (https://docs.spring.io/spring-boot/docs/current/reference/html/boot-features-external-config.html) which I have not used yet.