I never used this kind of a tool, but there are some tools for migrating data from mongodb to rdbms databases.
I made a quick search and found this one -> SQLizer.
But I never used it before.
Check these ->
https://blog.sqlizer.io/posts/mongodb-sqlizer-api/https://sqlizer.io/?utm_source=mongodb#/They say -> Upload your Excel file, choose the worksheet with the data, select the cell range, and hit convert. We'll convert your file into a MySQL script with a table definition and multiple INSERT statement..
So these insert statements are actually what you are looking for but uploading data to a website? Hmm that's a little weird.
You can write your own script to create those inserts for you!.
So, write a program that reads the records from MongoDB and transforms them into the equivalent then create insert statement according to your target rdbms..
So if you are asking for Oracle;
For data tansfer, you may follow an approach like this as well->
Use mongoexport nd export to a csv. Then use tools like SQLLoader or write a PL/SQL block to import that data to Oracle.