Why are the category's not like forza horizon 4? Because rn i cant speedrun this game bc steam wont let me start over again :(. And now it is just too much effort for 1 run.

You only need to fully restart a save file for full game runs. IL runs do not need to have a new save for every single run.

The reason for this is so that there is an even playing field and a common start point for all full game runs.