From the sound of it, I'd wager you've spammed your roulettes more than necessary. Basically everything in the game is gated by story. MSQ is largely sufficient to keep you at-level to proceed with story quests. Running roulettes should mostly be unnecessary unless you're leveling multiple jobs. If you're wanting to main one, and trying to push into HW to get to what you actually want, yeah, roulettes may have been the wrong choice.

But, if you also feel the story is a slog, yet you still enjoy playing the game otherwise, probably your best option is to just buy the story and job boosts. Skip the story that you're not interested in, unlock many more options, jump past much of the leveling process, and get straight into... whatever it is you do.