Currently Online 
I got an Xbox 360 for myself in 2023 after playing some of its family member's consoles before.
I haven't fired mine up in 2026 yet but online should still be available for some games. It's a pretty small list though, considering. Online features and logins frequently struggle.
Basically, if you want to play offline single player and multiplayer games you are covered. If you're set on syncing achievements to Xbox Live easily or playing more than a handful of major games online, you're out of luck.
If you enjoy your Xbox 360 enough, get an Xbox One eventually. That's what I did. Tons of quality 360 games to play on there too.
Lifetime Sales Predictions
Switch: 161 million (was 73 million, then 96 million, then 113 million, then 125 million, then 144 million, then 151 million, then 156 million)
PS5: 122 million (was 105 million, then 115 million) Xbox Series X/S: 38 million (was 60 million, then 67 million, then 57 million. then 48 million. then 40 million)
Switch 2: 120 million (was 116 million)
PS4: 120 mil (was 100 then 130 million, then 122 million) Xbox One: 51 mil (was 50 then 55 mil)
3DS: 75.5 mil (was 73, then 77 million)
"Let go your earthly tether, enter the void, empty and become wind." - Guru Laghima
