I agree. Learn registrations.
But I get that sometimes it is hard to grasp the concept. So in a few words: a registration is a full "snapshot" of the "state" of the total of all settings of the keyboard. Style, voices, split points, effects, volumes, pedals, you name it. Effectively, a registration can hold the state of everything (or less, you can control that). That makes it a very powerfull tool to create song settings. I have one bank per song and mostly several registrations within that bank for the various parts of that song.