Why can’t Need for Speed ??9 Career continue?

You may have other files that have been completely cleared or have already been cleared. When you select a file for the first time, you select a file that you have cleared, and then when you enter the game, you select a file that has not been cleared. The game may mess up the two files. By mistake, if you haven't completed the level by default, it will be considered as completed, so there is no next step. You can exit the game and then enter again, and be careful in your choices. Try it and see if there is any problem. If you still have no opponents, then it is the problem you said. Play again. It's not difficult anyway.