How To Use:
Put the datapack in the datapacks folder and type "/reload" . A message should show up. Click on the blue text and it should be copied in your chat. Replace {speedrunner} with the speedrunner's player name, or leave it as is to assign the role of speedrunner to a random player.
The next command "/function start:start" will start the match.
When the speedrunner or hunter wins, you will be prompted to reset the match.
Feel free to comment if you want any help.