the wikipedia take:

I see thanks, tbh my car is pretty crappy but if the uphill is too steep I will back up a little without handbrake and the guy behind me wont be happy :D

I’m curious, how do u do it? I mean you need a foot on gas and one on the clutch to start, how do you keep your car still without handbrake (other than just being quick after moving away from the brake)?

You actually summed it up pretty well! The few things I buy for myself are mostly “tools” to do/learn something that indeed fit your comment.