Source modeling for calculate connectivity

Hello
I am working on functional connectivity development in children's brains using EEG. I have a question
According to Figure 1, in the group of 1-years-old children, I estimated the resources using the MNE method, but the result is shown in the figure below.
Is there something wrong with my calculation process or it is correct?


I also calculated the functional connections as shown below. Is this method correct?

I would be grateful if you could help me
With respect,