When I hand-draw a curved line, it's never smooth, always has some jaggies. Is there a feature in Corel to "smooth" a hand-drawn line so that it looks uniform?
When you have the Freehand Tool selected you should see a setting at the top called "Freehand Smoothing". Try playing around with that.
You'll find option called Freehand Smoothing at the top of the interface. Please adjust it according to your need.
Always worked for me.