Do you mean more than a few hours at a time or more than a few hours all night long?
If you mean the former then yes, my first child didn't sleep through until he turned 4, and even now at 4.5 he wakes at least once in the night for a variety of reasons; needing the toilet, too hot, too cold, thirsty, nightmare, last night was "because I miss you mummy and I want a cuddle"!!!
My second DC slept through at 7 months and has only woken my twice in the last 9 months. How they differ!
It doesn't help but I have a family member who is a paediatric consultant and he says the non-sleepers are highly intelligent
that was his only view on it after 40 years on the job.
How do I cope? I hunker down and look to the future because I know it won't always be like this.
Every time I feel like a bad mum because I am too tired to want to play with my DC, or even cook them a highly nutritious dinner every single time, or socialise as much as I'd like, I tell myself through gritted teeth that it will not always be like this.
I also have growths on my brain which totally exhaust me physically because my brain has to work so much harder to try and complete normal everyday tasks. But even without that I know I'd have struggled because I was always one who needed 7-8 hours sleep every night.
All I can suggest is lower your standards temporarily because it won't last forever. And hang onto that fact. It's like parents potty training, you know they'll all get there because you never see healthy 16 year olds still in a nappy 