Thank you so much for replying, I appreciate it a lot.
My original post was very long, I had to cut out details you've touched upon with your replies. I'll try to address them.
Among the details I had to edit out is that the EXes were done in late ShB. We actually outgeared the content. The others cleared them despite me being dead 80% of the fights.
The other sprouts in the group were much faster learners than me, and had it down by an hour or so. I, on the other hand, would need literal weeks or more to learn a single EX fight, and I hear EX is incredibly simple compared to savage.
From what I've gathered, Eureka/Bozja/Deep Dungeons fall into the same PvE pattern of having to know sequences and perfecting strict rotations. I understand that this is literally the core gameplay loop though, I'm just really desperate to find something that somehow circumvents it.
I'm leveling DoH/DoL, and I'm looking a bit at blue mage, but to me they're distractions to what I'd actually like to do as my main thing.
My favorite content in the game is the stuff that involves fighting and teamwork. It's just very unfortunate for me personally that the way it's designed is playing so much to my weaknesses.
I've not checked out chocobo racing or hunts, maybe I will. I know literally nothing about them.
I hear they're reworking it for 6.1, so I'm hoping it will be a fun experience. I'm going to try joining a PvP static with the person who invited me to the EXes, I think that I'll mesh a lot better with gameplay that relies more on reflexes, improvisation and reactions than the memorization that PvE requires.