So i redraw your curve, Scale 100

Only few control points and "rounder" your abrupt angle curve!

As it's painful to draw circles along the curve with a good orientation better to make

only one circle out of the curve (no need to place it on the curve - must be out of the "box" of the curve for the automatic sweep!

But as you can see your original angle is always not too natural even rounded ! There is always a sort of folding! (second is better - more fluent)