As you're currently still on the "prologue", kind of, any choices you make for now has low impact on variables. Currently, the maximum you can reach with Elias is indeed 2%.
Starting Case 02, the choices you'll make there will progressively have much more weight.
It's only at Case 03 that you may impact relationships more.
I've built it that way so that you may, at first, get to know the system and built your character accordingly, and mostly, I didn't want to make high impact choices on the get go so that you may be introduced first to all RO and will be able to make your choices and moves after.
Hope that helps 🤗