Remove duel credits or add a training/practice mode

I really like the duel system as this is how I prep for fights in aw or get better in general. However, I duel so much that I actually run out of all my duel credits and don’t want to spend units for duels since I’m stingy. Many fighting games have a practice mode and duels are the closest things to it. Adding this practice mode would be pretty dope but unlimited duels could be an easier way to make a practice mode