And it would be good to learn basic debugging skills! At a minimum, place numerous Debug.Log statements before and after the location of the code in concern which will show in the device logs. Write out all your variable values at run time when running on your Android device, don’t guess. So you don’t know how to capture device logs for Unity games? Google it! (search tip “capture device logs for unity”). Even better Unity - Manual: Debug C# code in Unity This might help too
