I think that there should be a practice map where you can just practice speedrunning this game. I know you can just go into creative mode but I feel like there could be a way better method to practice. I think someone could make a practice map and have just everything we need to get better and improve our times. In Super Mario 64, there is a practice rom hack which lets you have a level select and level reset, it's extremely useful. I feel like minecraft being the most popular speed game should have something like that, I think it would be a big contribution to Minecraft Speedrunning. I don't know how to do it myself.

I can't get the practice map to work, I looked up a video on how to play on custom maps and it's not working

nevermind, it works