how to manage object move in spiral

can anyone help how to create a spiral movement like this picture, can i just use rotate toward or with some function or algorithm. Thank you

Wikipedia has formulae for spirals at:

Basically, you’ll need a variable called thera, which is an angle increasing over time, and a length r which increases over time.

thank you for your answer guys, may i know what are unit and freq variables?
in my condition, i have first parameter (angle, radius) and my spiral would be a fibbonaci spiral simmilar from link above. I’ve tried this, but it’s still far from my wish.

angle -= 0.0025f;

transform.Rotate(Vector3.up, angle * Time.deltaTime);
transform.Translate(Vector3.forward * 20 * Time.deltaTime);