As you can see, the game is really great and the transition between XII and XIII (attack collisions etc.) is just revolutionary that it's like a new game to me. We are all just in the process of learning it anew...
Rolling is really punishing so give more pressure on your corner traps when you're on the offensive and defensively, be patient and react to what you're opponent's gonna do for a fierce counterattack if you have no meter and execute a Guard
for a knockback attack (but quite expensive for it uses a stock in your meter).
The best bit is to react to your opponent's mistakes and from there punish with with a nasty combo