Hello Manickavasagam P,
Welcome to the Microsoft Q&A platform.
Please correct me if my understanding is wrong.
You want to transfer data from a storage account to Azure Data Lake Gen2 without using Azure Data Factory.
If this is correct, one method is by using Adlcopy.
The below document has a detailed explanation of the copy process from Azure Storage blobs into Data Lake Storage Gen1(the process is the same for Gen2)
AdlCopy download URL: https://www.microsoft.com/en-us/download/details.aspx?id=50358
I hope this helps. Please let me know if you have any further questions.