Finally finished my rewatch of Hunter x Hunter (2021) and it still bums me out there isn't more. It's understandable why, the mangaka has had what sounds like debilitating health issues, so the manga goes on hiatus alot and there isn't a lot of manga to adapt. I do hope he's able to finish it someday though, as I think this is a great series. I don't know how the anime compares to the manga, I glanced at the old late 90's anime attempt they did and it semeed like it started very differently, so a lot maybe has changed, but I like the story.
It starts out very traditional shonen, training/test arcs, then a small tournament arc, but then the whole series drastically shifts once they get to Yorknew City (Goofy name lol) and the story gets way darker, more brutal, and that sets the tone for the rest of the show. Greed Island kinda brings it back into a more standard Shonen formula, but still some intense aspects, and then it gets to the Chimera Ant arc, which is dragged out a tad, but has some fantastic story stuff. Gon goes through a lot, but I think this arc does the most for Killua, who I think is the best character in the show. He has the most depth of the main cast and sees the most personal growth.
I do recommend this series, it's a lot of episodes (Though not as much as something like One Piece or even Dragon Ball Z, and it's better paced than both), but it's a solid bit of Shonen anime and I'd say it's a top 3 favorite in terms of shonen series for sure. At least we are getting a Hunter x Hunter game soon, I just hope it's a decent fighting game and not some bland arena fighter.