Converting .exe to Android apk

Hello,
I’m new to Unity but I have already made the first Tutorial Roll a ball as .exe and it works fine. Now I want to try it playing on Android. I got everything i need (Android Studio, SDK, updated drivers, Unity Remote 5).
My question is do I have to make new scripts into this game Roll a ball so it can be played on phone with touch screen? If so what is the script and where do I put it? Are there any tutorials on where it shows you step by step? That would really help me. I’ve spent already 6 hours looking on youtube and google…
Thanks,

Jan

I don’t know about roll a ball, basically you should work with touches in android

or you can use ui-buttons to simulate buttons (or whatever: like gui-textures, gyroscope).

So I think yes, you should rework your input.

And try to ask this in more specific sub-forum.

You export it as an Android build