As you fly more you'll be less glued to your plane and what's it's doing and more aware of the general area around it and what you want it to do. It just takes time.

Initially, I always find a distant object that lines up with the center of the runway and guide my plane to turn "at" that object for my final. If you just use the plane as a guide and try to figure out where it is in reference to the runway, you'll probably miss a lot.

In lieu of any distant objects to line up with you can use yourself.

You're standing back a little from the runway, but you're close, so bring it to you. Guide it toward yourself. When it gets in a little closer you'll know just where it is and can make minor adjustments to line up with the runway.

Think references. Good luck!