How to find your traffic sources in Google Analytics
You can find traffic sources in your standard Google Analytics reports.
Here's how.
"Reports" selected in the GA4 menu
Expand the " Acquisition " reporting area within the "Lifecycle" reports. Then, click on the " Traffic Acquisition " report.
Navigating to “Traffic Acquisition” in the GA4 menu
You will see your traffic classified at the default Session channel group level.
A report showing traffic classified at the default Session channel group level
Professional advice
If you click immediately to the left of any of the phone number in korea column headers, you can sort based on that field. By default, the table will sort by the "Users" column in descending order.
You can view your traffic sources categorized by a different dimension by changing your primary dimension. To do this, click the black arrow to the right of "Session Default Channel Group."
Black arrow to the right of "Session Default Channel Group" highlighted
You'll see several options. Try switching to the "Session Source/Medium" dimension.
Dimension "Session Source/Medium" selected
You can now view your traffic data at a more granular source/medium level. You can also add a secondary dimension to your traffic source data.
To do this, click on the blue " +" sign to the right of "Session Source/Medium".
"+" sign to the right of "Session Source/Medium" highlighted
You will see a dialog box where you can search for a secondary dimension.