Ugh yeah, I feel the same way. The thing is, other than just the very foundational core gameplay loop, damn near everything in Halo Infinite is just plain old worse than the majority of past games.
Vehicles: barely spawn, many dead on arrival when they do, some way too dominant ala wasp, some seemingly useless ala banshee, despite those two supposed to be roughly equivalent for unsc vs banished respectively. Many other vehicles and weapons also suffer from this.
Playlist variety: there is very little. Just the basic modes, with a single ranked playlist, lackluster btb and only fiesta for the action sack playlists, which is probably one of the least fun (compared to infection, grifball, action sack etc. ). Plus no team snipers etc.
Gamemode variety: also very little. There is no multiplayer pve mode whatsoever. There is no forge. Customs are broken and has very few gametypes to build off of.
Campaign: No coop, no mission replay, not particularly longer or more in depth than any other Halo. There’s a big world space, but with no incentive to use it and no mission replays it ends up feeling like a Ubisoft game which I cba go 100%, and if I did I’d never return to it.
Customization: no colour select. Huge potential completely wasted. Very little to earn through gameplay.
Stats & progression: No service record, no Spartan ranks. Only progression is battlepass which is mostly empty unless additional money is spent. If you’re a free player great but most halo fans either bought the campaign or are gamepass subscribers so it makes no difference if it is free or payed.
Overall, once you’ve played it for a while, completed the campaign & dabbled in multiplayer this game offers nothing new and virtually no improvements over prior titles. Gunplay isn’t enough to save it. It seriously needs a huge overhaul cause as it stands I’ve no interest in returning to it.