Hah, thank you for tagging,
@Antimatter . Though I don't know how much of a help I can be. As a kid, I played both 2d and 3d platformers, rpgs/arpgs and some strategy games. So it's not like I started playing movement/reaction-based games in my adulthood. Although I can say that once in a while picking a game outside of your usual comfort zone can be a really rewarding experience. Since
@Antimatter mentioned the game already, I can add that I owe Monster Hunter probably my peak gaming moment in terms of feeling of satisfaction/reward/relief after overcoming what felt like an invincible, unbreakable wall.
Another benefit of mixing up genres of games you play is that, in my opinion, you start to appreciate the games in each genre more. If I was to play rpgs all the time, like a Baldur's Gate, then each of my playthroughs would be just out of habit, like an autopilot perhaps. But by changing genres and thus experiences, things are feeling much more fresh to me.
As for SF6 in particular, I have heard overwhelmingly positive about it. Even solo players have apparently plenty to do in that game.
For the simplified imputs, I don't know exactly how they look like now, but - even though I rate my skills as beginner - I don't think inputs are the problem in accessibility for games like Street Fighter. Because the input wasn't that hard, and even if you make them easier, you'll still probably get bodied online. Why? Because you'll still need to know the machups (and these comes only with experience), you'll need to know what you and your opponent can do and what your opponent is likely to do. You need to be able to perform combos with 2-3 frames of link between them. And so on, and so on. Overall, I don't see inputs as something that gatekeeps people from trying the game. And even if they are simplified, there's still much more to the game than that.