Am I allowed to use some kind of program or something along those lines that makes it so that as soon as I press a specific key or something the game instantly clicks the green flag, and then starts the game/timer on the first frame the New Game button is visible, therefore making it much easier to reset the game? If so, what do you recommend using in order to accomplish this?

I assume the answer is yes, but I'm checking just in case.

You can already press Q and R at the same time and the player will teleport back to the beginning :)

yes use blast magic modpack and press one making it ez for u