Hello Prabha,
You can use Cloud Logs Exclusion to remove unwanted logs and save cost on cloud logging.
Operations --> Logging --> Log Router --> Cloud Logging Bucket (_Default) --> Edit Sink --> Choose logs to filter out of Sink --> Add filters to exclude type of logs not needed
this will not generate unwanted logs and you can control the type of logs you want to see and pay for them only.
Thanks,
Pushkar Sharan