I haven't played too many, but Drayano's hacks have a reputation for being crazy hard. Maybe you won't be into it, but give one a try and see if it revitalizes the spark you had as a kid.
[Drayano Hacks]https://drive.google.com/drive/mobile/folders/0B-zmEVN0Mas6Q3lLbDJDaWNyaVU?resourcekey=0-o98YGOlDJ0JVXXjxoHprIA
If that doesn't work out, I'd recommend trying out a nuzlocke with one of the Gen 1-5 games. (Red and Blue through Black and White.) A nuzlocke is a self-imposed challenge with a few rules. Here's a link to understand how it works.
I hope this helps!