Analyze the logs in Storage utilization

We are having a few queries on Elasticsearch logs optimization, we are doing the cost optimization and we want to know how to analyze the logs based on the storage utilization and also to know more about how many users are using or accessing the Elasticsearch in each and every day

This might help us to know about the utilized resources that keep track of all the logs

Please don't create multiple topics on the same question - Elastic Search Queries