I'm really curious what tales game do you think has the most depth or which one has your favorite combat system? For me its graces f but pretty much every game(besides Arise) has a uniqueness to combat that makes it pretty hard to say which game is definitively the best or most nuanced.
It can be if you're first setting out to learn Ludger. I recommend first getting comfortable with the weapon switching inputs forward and in reverse to build muscle memory, then practice doing one or two artes into switching weapons. Once you're comfortable the rest will start to flow smoother.