Unable to read Cluster Stats index

I am unable to read or fetch data from cluster Stats field.

GET /_cluster/stats

I need data in this index to be used in the kibana dashboard visualization to fetch the details like disk usage, cpu & jvm usage just like data in stack monitoring. Can anyone help me with this please.

Cluster stats in monitoring.es* index can't be read or used in dashboard creation, but
When I search

GET .monitoring.es*/_search
{
      "query": {
    "exists": {
      "field": "cluster_state"
    }
  }
}

Cluster_stats field data will be visible but can't be searched with API or used in dashboard.

@Lisa_Jung @warkolm

I am unable to view the cluster_stats either in monitoring index nor in metricbeat index.
I even added the cluster_stats metricset in metricbeat module in yaml file.

Due to this I am unable to create dashboard to fetch cluster details like total Memory, Disk usage & cpu.