If you lack the IT skills necessary to do your job...
... then your manager has failed and needs either retraining or firing. Because it's their job to make sure that this is not the case. That's, like, literally the most important thing they're paid to do.
And they're paid more than you, which means their fuckup is bigger than yours.
What do people understand by the phrasing "do their jobs well"? Everyone imagines that a computer system can be super-efficient, one-button no-errors all-singing Dolby-surround digital perfection. Now, we hardened veterans know it's never (ever, ever) like that, nor likely to be - but at least one-third of all people imagine that it should be, and then blame themselves when errors happen.
When the fact is, the interface/app they're using is likely so shite that unless you perform steps A through J in the correct order and at the right time (which you have no way of telling, and neither does anyone else because it's undocumented and probably, frankly, completely untested...) - it will go wrong.
If you're lucky, it will go wrong in some obvious way, but many people are so deluded that they actually see this as a failure, rather than designed and intended behaviour.
TL;DR: if your job requires you to have skills you don't, in fact, have, then it's the job that's badly designed. Not you.
This XKCD also seems appropriate.