Do you not have some sort of work chat? Video calls? Peer review of your work output? I haven't worked with anything with oversight as lax as you are describing in at least a decade.
Yes, of course we have work chat. But everyone is just a little green dot. Often people will be in another meeting or afk, so you'll send a ping and then wait for 30 minutes for them to get back. Or you'll forget to ping them when they're done with a meeting. In person, if someone isn't at their desk, you just wait until they come back, which you know happens because you see them.