Is there a way to parse messages in Grafana with elasticsearch as the source?

I am using Grafana v7.2.0 with Elasticsearch as a data source. My logs look like

{
  "message": "Counter: 10",
  "id": "Rd57OnsBW_gLMXbXxjMh",
  "level": "info"
}

My aim is to filter out logs with values of counter > 5. I am able to filter out logs with non zero values using

"Counter" NOT "Counter: 0"

1. How can I filter out values of counter > 5
2. Is there a way I can group these logs by id and take the max value of counter for each id?