My current section doesn't have a WhatsApp group, and I don't know if the one I'm moving to next week does (I'm going to suggest setting it up though) but the other 2 sections I've worked in this year do (I was in 1 section for 5 years, got transferred just as Covid happened, and got moved to another to do something short as an emergency and moving to the other new one next week as they had a more urgent need than the original new one - so it's been particularly frustrating learning new work and new teams 3 times over the past 6 months!!).
But the 2 I'm still on, while mostly used for general news and funny chat, have both had occasions where they have been used to figure out some people's tech issues. And to pass work from 1 half of a team to the other in a couple of instances (sometimes its an issue in our city and 1 of those teams is split between this city and another so they have a different set of servers etc).
DH understands computers better than me (hell, my 14 year old has sometimes resolved an issue I couldn't understand!), but I am not dreadful compared to some I see on the chats. I just take my time and work through the steps I can do. I get in touch with the IT helpdesk if possible to assist. But sometimes you can't get them or they already have a queue of urgent problems ahead of me - so I have to wait.
So if I have to wait, and if the system is properly down, I pull out a report I was meant to read before now, do some organising and filing, or shredding confidential docs for disposal - well actually its burning them at home), or handwriting things to put into the system when it gets up and running again. Maybe with a longer cup of tea and a biscuit to cheer me up on a bad day.
Because it is probably not my fault the system is down, I'll do my best to get up and going again, but I am only 1 person and fixing IT is not what I get paid for and is not my expertise - so I will do what I can to keep doing some aspect of my job, or something else useful for my job, until I can get back to what I was at.
And the bosses, who are all dealing with similar, are generally very accepting of that.
Or I have very occasionally decided to do something else entirely at home, knowing I can't get back to the computer for a couple of hours - and then gone back into it later in the evening for those couple of hours instead and done what was needed then, when I should have been finished (but had taken that personal time earlier instead). Using the flexibility of working from home to its advantage. (In reality, I usually end up doing way too many hours at work and going back to it too many nights, so the odd time I take a couple of hours during core work time are very rare).