How fast is the query..? plz,.help me

Versions (relevant - OpenSearch/Dashboard/Server OS/Browser):
Amazon OpenSearch 2.11

Describe the issue:
query speed too slow…

I have 5 index templates and rollover 2day or over 30GB.
A week after the index was created, passing ultrawarm state.(This role must not be changed…)
There is 1 primary shard, 2 replica shard each index template setting.
On average, it make 20 indexs for a week and makes 60 shards including replica

query is very simple. just find one field
The range of indexes is one week

Amazon opensearch domain spec: 3 master node(, 3 data node(, 3 ultrawarm node(

Relevant Logs or Screenshots:
query speed over 10s…