Who is too tired between us two 
??
I donât see why you need to instance the point :
Also, you can use the Curve Arc primitive instead of cutting the Circle (at least in blender 3.1)
You can make a point primitive like so :
As a side note,
There is an upcoming duplicate geometry node that could be helpful to create some arrays along many things.
I donât know how easy it would have been for your âcurved arrayâ so maybe what youâve done is the simplest way anyway.