Do they play sports in a virtual world or is the video gaming itself the sport?
Sorry for the late reply boss. Video gaming itself is the sport. The main story is set in an MMO, and the characters are grinding to beat bosses that no-one has ever beat before. But the story will occasionally go to other games to practice and meet players who'll join the main game later. The latest arc was around 1/3 of the current manga and it's an esports tournament in a different game.
It's not exactly a sports manga all the time, but in practice it's like it because characters are all pursuing their passion for gaming. Some are pro players, others are escapists; The main character is just a fan of playing really bad games. There's one character who just collects rare creatures in the game because in real life she's allergic to animals.