Connect the points to form bridge piers

Hello everyone, I have point coordinates from autocad (this is the coordinates of the bridge abutment)
I want it to connect into closed lines like image number 2, is there any way?
If I use a polyline it will connect the points together, which is not what I want
I’m a newbie asking everyone for help
Picture 1 :

Picture 2 :

Picture 3 : (10.8 KB)

You need to internalize the points.
We don’t have your excel files.

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if you manage to separate the points in a point component for each group, you can do this