Can't download any Steam games despite Steam itself working flawlessly
So pretty much as the title says, I can't download any Steam games from my library. I haver tried 4 different internet connections (all 4 being totally different ISPs one of which was via iPhone tethering). I have troubleshooted everything you can with the Steam client itself according to Steam Support, but still no change. Just to ensure it wasn't somehow an ISP issue, I tried downloading on my older Mac that doesn't have the hardware capable of running my selected games, and that (MBA 2017) downloads any and all titles like a charm. With this MBA 2022, no a single download will successfully launch.
Steam itself when failing to download a title says "No internet connection". But this cannot be the case due to Steam signing in and having every other service it offers functional. Even game streaming from another machine. So I'm definitely thinking it's something to do with my macOS install/some setting within it.
I've disabled the setting to block connections firewall just to see if something was going on there, but that made no difference. Is there anything on macOS that could be causing such issues. Is it a drive write access violation? I have no idea but it's really annoying. I've had this Mac a month and not made any progress.
Just to mention, the only program having any sort of downloading issue is Steam. No other program on my computer has any sort of internet issue.
Any help would be greatly appreciated.
MacBook Air (M2, 2022)