Here you have a solution to this problem
As the host of the career mode, go to the Multiplayer section of the game.
Select the Social Play option to create a new session.
Set the lobby settings to "No (Open) Lobby."
In the lobby menu, choose the Multiplayer Event Settings option, and then click on Lobby Options.
Within the lobby options, change the car category to "F1 2023" instead of "F1 World Car."
Go back to the Multiplayer Event Settings menu.
In the Simulation Settings option, locate the Equal Car Performance toggle.
Set the Equal Car Performance toggle to OFF, which will disable the equal performance mode for all cars.
By following these steps, when you create a new session in the Two Player Career mode, you will notice that the equal car performance is disabled, allowing players with the fastest car to have a better chance of winning.
