Sharp corners in curve?!

 From:  Lemo (LEMONNADO)
Took about 1 minute to get stuck again hahaha.
I try to connect a curve to a line. Join works great, but I can;t get rid of the misalignment in the curve flow. I am missing something like 'Bezier Handles' which I can bend and stretch independently from the right or left tangent. I also can't draw a curve with 'sharp' corners. Like a 'ctrl' click when I do not wish the knot interpolated. Am I missing something?!