Hello, I am still an amateur in Cities: Skylines and need help with this problem.

I have a bypass train station that connects with the outside train traffic, but the problem is that these outside trains (passenger and cargo trains) always take up the platform track (as shown in the picture) where my commuter trains need to wait for them to leave the platform track. I want to change the route of these outside trains to take the middle tracks so that my commuter line can go smoothly.

I'm sorry if the solution to my problem is an obvious one, but I don't know how to solve this.