Check out SMN, the job is basically on rails outside of niche moments where you can optimize if you want to (and this is me being charitable to smn mains who will inevitably come in here to talk about why their job requires a PhD as people always do when someone talks about job difficulty in this game).
MCH is also very procedural. If you just hit stuff when it's off cd and press 123 in the meantime while doing your heat blast minigame occasionally, you'll be alright. There are other things you can do to optimize this, but even if you don't, you'll still be better than most of the people I see in dutyfinder.