The one on the right looks like a 14 pin molex connector. You can buy the plug by itself and make a connector, but finding the pinout is going to be a bitch. As for the one on top, it looks like maybe a USB2.0 motherboard socket.
1.) Someone is always the weakest link, it is what it is and it's not necessarily a bad thing (just because you're possibly not as experienced as your coworkers, doesn't mean you're doing a bad job)
2.) It sounds to me like you have a good work ethic (working over to help your team etc, and being concerned about it to begin with)
3.) It also sounds like your company may actually just be understaffed or over working your team. As other people have said a ton of companies like to tun skeleton crews. I've been victim to this phenomenon in the past and boy did it suck.
4.) Complaining is definitely something you can work on. Everybody complains sometimes, and people who pretend like they don't are liars. Keep it minimal, and don't let it be such a pattern that everyone just hears it and goes "oh that's so-and-so bitching again". Relax, things happen all the time. You can still talk about negative things, you just don't also have to always be negative about it.
I work in medicine and I have used these on people (and tried it once to see how it was) they're very fucking strong. It's like inhaling cat piss that's on fire.
While it's shitty if they're doing that, I think de-federating is more just for defense of the instance against literal crimes/malicious content. Things like instances hosting CSAM or spam bots. Otherwise it's pretty easy for users to block instances nowadays (or even to just call for mass boycott)
Nestle bottles a bunch of their water from "municipal supply in Hialeah FL" so a ton of it tastes like toilet