There's a ton of games across genres that I've have had a passing interest in, then ended up trying and just not getting on with them. RPGs are the big one; I love the art direction in many of them and their stories seem like they'd be fantastic, but I simply don't 'get' the gameplay of them. The only one I've ever really played through was Fire Emblem on the GBA, which I purchased as a child after playing as the FE characters in Melee and thinking it would play like Zelda. To this day, I'm not really sure how I made it through it. Action RPGs seem like they'd be more my speed; I liked both the demos of FF7 Remake and Nier: Automata, but I know damn well I don't have the attention span for the full games.
Truth be told, and it may just be my age/position in life, the only games I really enjoy anymore are racing games, shoot 'em ups, puzzle games and more arcadey titles. There are exceptions to this of course; I do like the Crash Bandicoot games and did recently play through the Klonoa remakes/remasters which were great. The Pikmin series is fantastic and I'm very much excited for 4, despite me not being into RTS games (if you can really consider it one though). RollerCoaster Tycoon 2 is one of my favourite games ever made and I still play it frequently now, yet I know I wouldn't get on with any of the later entries or games of a similar ilk.
If I can deviate from the thread title, instead of a game I want to like but don't, its a system: the Nintendo Switch. Has a distinctly cheap feel to it, which is rare for a Nintendo device, and the unreliable Joy-Cons just help further demonstrate this. I think the UI is cold and sterile, and I find the direction they've taken with it in regards to its online service and regurgitation of older stuff rivals Sony's level of complacency. Most of the 1st party stuff they've done for it hasn't really wowed me either, but again I think that's more of an age thing and knowing what I actually like versus the games being bad (though they've had a few stinkers recently - looking at you, Mario Golf).