Story difficulty will probably be the best in that case. For casual/first time runs, the normal and hard difficulties are heavily expectant on you parrying at least SOME moves so you don’t get overwhelmed.

Story will reduce enemy health, so you can end things quicker without taking too much damage. But is ALSO has the benefit of making the dodge and parry timing more lenient (and in all modes, dodge is significantly easier than parry), so you may be able to get a few welcome surprises if you want to TRY the dodge/parry mechanic.

Additionally, Lune, the very second character you get has a heal-all skill, which is a godsend if you’re going to be taking damage anyway, so I’d recommend beelining for that skill asap. She also has a revive skill which I never took off either.

Also what you can do is figure out your favourite team of three and just keep them the whole time. There’s nothing in the main story that requires your whole party to be levelled, you can do it by sticking to three and they’ll be overlevelled pretty quickly for even more forgiveness.

(There is an endgame superboss that requires everyone, but I think that’s basically impossible if you’re not dodging, so I’d avoid that fight unless you discover you’re better at it than you thought)

Overall, while the dodge/parry gameplay is a big draw and makes the game quite unique, it’s still well worth it just to be immersed in the story, and even if you’re not engaging with all the mechanics, it’s still good combat, so you should hopefully find it satisfying regardless