Hi @Mang-Joo Welcome to the community.
Just dig into the data.
You can look at the data in Discover ... but it is pretty easy to just go to Lens and Start working with the Data.
Open Lens and Create a Graph
Example one of my services... from the APM App
Here is a Lens (use the apm Data view or create one)
Note I filtered for the same service...
Or I took out the filter and put multiple services on the Viz


