This is a niche but famous fix from the Codemasters forums. Many users discovered that a hidden system driver called "HID-Compliant Consumer Control Device" (used for media keyboard keys like play/pause) would register as Player One.
I can walk you through the specific steps to get your name on that podium! AI responses may include mistakes. Learn more F1 2013 - Can't change my player name - OverTake.gg f1 2013 player one fix
If this works, you can choose to re-enable the device after playing, but most users leave it disabled permanently without issue. This is a niche but famous fix from the Codemasters forums
The "Player One" issue in is a known bug where players cannot change their driver's name from the default "PLAYER ONE". This typically occurs in certain versions of the game where the name-saving function is restricted or broken. Manual In-Game Fix AI responses may include mistakes
As a last resort, you might consider reinstalling the game. Make sure to back up your save data if possible.