@Sarvesh Pandey The minimum throughput required to provision a container/shared throughput database is 400RU's
If the utilization is only few transactions in a day, serverless is a great option which will be generally available soon.
If you do not want to use a preview service in production, please try CosmosDB Free tier
----------
If an answer is helpful, please "Accept answer" or "Up-Vote" for the same which might be beneficial to other community members reading this thread.