People had tried to teach me stick shift, but I never had the motivation to learn. Then I randomly bought a stick shift car. That taught me! You can’t be afraid to stall out. The first day I had the car, I stalled out about 20 times in the high school parking lot picking up my sister. Embarrassing, but I can laugh about it now :)
Alternatively, you could try the trick that my uncle used to teach my aunt. He gave her a lesson, parked the car on a hill, stood behind it, and told her to go. She swears that she learned in one try.