How to set my iPhone GPS to never go on the toll roads?

On my old GPS system and my old Android phone's GPS, there's an option to "avoid toll roads" and I set it permanently, so it doesn't have to ask me every time.

How do I do that on my new iPhone? Most recent phone with the most recent update.

The maps keeps wanting me to go on the toll roads when they are nearby. Besides looking down at my phone and dragging the blue line that shows the rout to the next street over, or to exit the freeway before there… What can I do?

I just want to set it once and never be told to go on a toll road again. How do I do this?

You can't have it permanently avoid toll roads when you first type in the address it will show different ways to go and there's always at least one that you can pick that DOESN't have toll roads