Mine is probably Sekiro. I really dislike the story being about feudal Japan and the main character being the grunt for a privileged asshole but the combat and bosses are so good. I don’t think any game will ever top that.
To see how good the game is, compare it to J*di Knight: Fallen Order, which is essentially meant to be a clone of Sekiro but is so lacklustre in comparison.
i enjoyed skyrim, and i wanted to try oblivion but the graphics were a turn off. Is it worth playing anyways?
Try slogging through a couple of hours and then see if you like it. This might help shake off the first impressions a little bit. I liked it a lot when I played it but that was a while ago.