You could try tasker. But you need good knowledge to do that. Without root you will never use mirroring well.. That is the simple truth. And biggest problem, you will loose mirroring very often and always be in a situation needing to resolve things.. I used it without root at past. I'll never try it again.On my Samsung Note 9 I can use S2A without root. When I connect it to the USB port of the car, I need to confirm 2 times, that AA may connect to the phone. Is it possible to to automate that?
More troublesome is that mirroing is sometimes lost (screen stays black although touch on the darc screen reacts), when I switch between apps or the cars AA launcher and then replugging USB can be required. This can happen also on fist connection. Is a solution for that known?