You're learning and applying something new, and it requires you to step out of your comfort zone. Early on, you'll face a lot of rejection.
My point: being frustrated is completely normal. Just know that men in far worse situations than you likely deal with have gone on to pull 10s every time they go out.
Women have two types of toys: teddy bears and vibrators. Teddy bears are for when they are emotional and want to watch romcoms, and vibrators for when they want to get off. What toy are you?