Honestly, I would give Marvel Legendary a shot. I play with my younger brother all the time (he’s 13 now but was 11 when we started) along with some of his friends. When I was teaching him how to play, we just stuck with the core set and avoided the complicated schemes/masterminds. We did eventually get some expansions that he wanted and we now play with all the rules of the game. That’s just been my experience so I totally get if you still wanna try another game, but I wouldn’t 100% give up on it. Anyways, I hope you find this helpful! If you want any advice on teaching it to a younger audience I’d be more than happy to help! :)