I'm looking for a good instance to join for work use - specifically something with communities focused on cybersecurity, systems engineering, programming, devops, etc. No NSFW stuff, world news, entertainment.
I'm an IT professional but I find most IT communities to be full insufferable people and full of useless and irrelevant information on obscure systems and practices that don't apply to the average IT job which is sys admining windows/linux/mac.
Would love a community that was chill and not full of people trying to one up one another about how amazing they are or how hardcore their lab is.
You asked for some chill communities for discussing IT stuff. As you already mentioned, chill communities are hard to come by. Don't diss it so readily just because you don't have a homelab or self-host, plenty of people in those communities aren't either but they're still there to enjoy the discussion.