Loki is pretty simple so not sure what you're expecting.

There's always an ELK stack but I feel like that's a lot more overhead than a grafana/loki combo.. I personally never want to use this again but it's up to you.

You just need something to collect and ship the logs (promtail, fluentbit, opentelemetry), something to store them (loki, logstash), and some way to query them (grafana, kibana, logcli).