Casuls:
Lag switch that easy to do for anybody, Jester's Robe, Ice rapier, Rapiers, Sun sword , super buffing yourself, spam axe(steel axe), magic/pyro/hex/miracles, katana users any katana users(exept Bewitched alonne sword), poison build, buckler or any small shield with this parry animation, monastery scimitar, Twin Blades, warped sword spam, bows and great bows or crossbows for finishing targer. If you are using something from this huge list, then you are casual.
The only way to git gud take UGS or gs teach how to parry with it and then you can easy parry with any other lighter parrying tool.