Ditto here and I have a toddler. A baby carrier is the only way to get him to go. Then, once he's asleep I carefully transfer him to a baby swing so he stays asleep.
The toddler mostly amuses himself with lego or a ball. If not, I put in the night garden on the laptop.
The parenting books, oh my goodness, they made me so angry. The EASY routine (BW) is full of inconsistencies. When I realised that, I abandoned it. For example the book reckons swaddling calms a baby.
Uh huh, so why can I swaddle my relaxed baby, which makes him scream for 40 minutes, and when I take him out he is relaxed within 2 minutes?
And how come I'm 'accidental parenting' when I'm rocking him but not when I'm shush patting him? Never mind that sh pat does fuck all but piss off my tired baby.
One thing I do agree with though is, if you've been working on getting a nap for an hour, give up, play with your baby, and try again in half an hour. Otherwise you could be doing this all day.
I do remember one evening I spent FIVE HOURS with him in the book, trying to get ds1 to nap.
Also had one day of 16 hours in which he napped a total of 90 minutes. And at night slept in 50 minute chunks. I went a bit loony.
It's definitely not you, OP. some babies are just not that good at sleeping. They do come round to it eventually.