"Think of how stupid the average person is, and realize half of them are stupider than that." - George Carlin, greatest philosopher of the 20th century.
"There is a considerable overlap between the intelligence of the smartest bears and the dumbest tourists." -Yosemite Park Ranger on why it's hard to design a bear-proof garbage can.
A bit of my own history: I used to work in a warehouse. It wasn't a hard job, at least not mentally.
Physically? Oh yeah, lifting boxes that often weight as much as I do is indeed hard work.
The work flow is as follows (assuming you're at point A, which is your work station):
point A>print order>stand up>get a trolley/cart>walk around collecting certain items as per the order's requirements>go to point A>open order>click the "scan items" button>scan items>put items in box>lift box>move to point B>put box down>go-to point A.
However, as with any job, there were some outliers. Let me list a few.
- The actual, legitimate autist: He was genuinely slow, but we loved him, and we made extra sure that he understands the job. He passed the introduction period with flying colors. Why am I including him, then? He will be our control group!
- The guy who stood on his head: I'm not sure what's wrong with him, but every break he asked management if he can stand on his head during break instead of, say, eating. Even on lunch break he'd stand on his head. No arm support - he'd just sorta flip and legitimately stand on his head. Maybe he's also autistic, but I haven't seen this level of autism yet. The legitimate autist confirmed this is not autism, there's something way "stronger", as he called it, wrong with his head.
- The dick protester: I'm not sure what caused this in the first place, and neither is anyone else in the warehouse. Again, he already was a bit slow, though "faster" (?) than the actual autist. At some, point for whatever reason, he took his clothes off, painted his dick black with a sharpie, and climbed to our highest shelf, and started to dickcopter everyone who passed nearby. At first we asked him nicely to stop. No dice. Our strongest guy tried, and eventually succeeded getting him down. I like to imagine it as an act of protest. Not sure what he was protesting against, but I digress.
- The guy who I had to teach to use a keyboard: somehow, roughly born in the '90s, when keyboards were already prominent in various ways (typing machines, both electric and manual, computer keyboards, I don't know what else), this 25-30ish guy managed to avoid them all. How is beyond my comprehension. I had to teach him how to do literally everything. Credit is where credit is due - he was eager to learn this mysterious device called "a keyboard", but I would REALLY like to know how he lived 25-30 years of his life without learning about keyboards.
- The guy who "sold" a 12000$ dress for free: same guy, slightly after teaching him about keyboards. After teaching him how shit works (I dedicated 4 weeks to him instead of the normal 1), he saw an extremely rare window: "would you like to sell this item for free?". Dollars, not local currency, DOLLARS! 12k DOLLARS! Now, this peculiar window pesters the crap out of you, and for a good reason: you don't just hand out a 12k dollar dress to someone. He clicks "ok" and "yes" every time it pops up. Thankfully, the customer called the warehouse directly to ask wtf.
- The guy who took my meds: he was definitely a druggie. Every time a new person comes to the warehouse I find 5 minutes or so to explain my disease, and more importantly, explain my meds are not, in fact, "fun drugs" like many are. I make sure they understand that twice a day I want to die for several hours. A guy thought I'm being all secritive on him and took a dose. I had to train my body to safely take however much of what I take. It's like trying to go cold turkey after smoking 5 packs a day for several years. Hypothetically? Possible. Practically? No. He disappeared for 3 days, came back speaking in tongues, and managed to call me a son of a bitch before collapsing on the way out.
- Myself: I did some stupid shit too. The one I particularly recall is climbing on a shelf (sure, we had ladders, but go find them), sort of wobbling, and collapsing 3 "streets" - a walkway between shelves. As you can imagine, literally everybody hated me for that.
There were more before me, and there will be more since I'm gone now.
So, what am I saying here?
First off, where exactly did you get the information that you're low on IQ? There are very few resources for a reliable test. Any "find out your IQ for freeeee" links are bullshit.
Second, what if you're simply not well built for your current job?
Like, sure, I can learn Excel and get some accounting job hypothetically, but my "calculator" will take a good spreadsheet while an actual accountant do the same in one cell and replicate it 500 times.
Consider you might simply not be built for this job.
If they don't fire you, though, then you're clearly doing something right.