I need live online support to help export my online quickbooks back to my desktop

Have you visit the following reference?

https://quickbooks.intuit.com/learn-support/en-us/import-or-export-data-files/export-and-convert-you...

I'll guide you through speaking with a representative, @usershaneloyd1.

I'd suggest using the Get a callback feature from the Help menu. This way, one of our representatives will confirm your call. From there, they can help you transfer your data file back to QuickBooks Desktop.

Here's how: 

1. Go to the Help menu at the upper right. 
2. Select Contact Us and enter your specific concern in the What can we help you with? box. 
3. Then, click Continue. 
4. Choose to Send a message and enter your contact information. 
5. Once done, select Continue. 

Please see the screenshot below for visual reference.

You can also check out the article given by Fiat Lux – Asia. It will guide you on how to move your data from QuickBooks Online to QuickBooks Desktop.

 I'll lend a helping hand if you need anything else. Keep safe always, @usershaneloyd1.