Sort of me too. Being fair ( to myself) I was taught coding and how computers worked in the 70s. And as a teacher, when PCs arrived in schools I was taught how to use MSDoS and sort out problems by the guy who'd been training school staff to use computers until he went on to a headship and left me to take his place. And I learned the hardware part of the craft by taking machines apart and putting them back together- a lot. (And reading a lot). And for many years I was the official schools part time tech support because there were no pros. In later years I worked alongside the proper techies once we had some, being trusted by them to do much of the routine stuff.
I still have weak areas of knowledge. I'm rubbish on network stuff and servers. But I do know enough to know when I don't know enough - which is more than I can say for some of the tech support staff, especially in the early days.
Like the guy from tech support who brought our first laser printer, started to set it up, got toner powder everywhere (God knows how or what he'd done), left the drum in bright sunlight while he vacuumed the inside with the cleaner's vac...............
Biting the hand that feeds IT
