I'm here to help you. In your case, you can open the Transaction List by Vendor report, then filter the transaction types to what you need. I can show you how.
Click on Reports at the left pane, then look for Transaction List by Vendor on the searchfield.
Open the report.
Go to the Customize menu.
Set the date, then choose the transaction type you want to display under Filter.
To group the transactions, you can click on the drop-down arrow under the Group by section.
For an additional reference while running or customizing your reports, you can open this article: Run reports in QuickBooks Online.
If you wish to save the current customization settings of your report, you can memorize it by clicking on the Save customization button. To learn check, check out this link.
Let me also share these articles for additional reference:
I'm always here to ensure you'll be able to get the information you need. If you have any other questions, please feel free to add a comment below. Keep safe!