Hello everyone! 
Here’s my suggestion:
Add an option so that the game can choose AI difficulty (based on your driving skill & pitstop strategy) instead of trying to choose it manually.
This optional feature will ensure competitive racing with drivatars and you don’t need to spend time to try and find your own difficulty level.
don’t worry, you can stilluse manual difficulty adjustment
Thank you for your votes. 
The question it raises is: do you want challenge with this chosen difficulty?
I always set it to 8 and I often end P6 or P7 and I’m fine with it: I don’t want to end P1 at every race.
What would be the condition to choose automatically the “right” difficulty level?
Hello.
Difficulty needs to be in a way that can make your race competitive.
If the difficulty is too low, you’ll win easily.
If the difficulty is too high, you’ll lose easily.
But, a difficulty level that gives you some challenge and puts some pressure on you, and at the same time, gives you a chance to get the podium; it’ll be more balanced.