To offer a different perspective, I've loved having a baby.
I have a history of mental illness and I'm neurodivergent, so I was expecting the worst. But honestly, I found it fine. Yes the sleep is a shock to the system, but it's no where near as bad as I thought it would be. You just somehow get on with it, and you're that tired that you do sleep in between wakes.
Firstly, sack off housework. If you can afford it, just get a cleaner for a couple of weeks. Prep some meals so you don't have to cook, and get plenty of food you can just shove in the oven. Take any opportunity to sleep when you can.
Don't worry about newborns having a schedule. They don't need one at that age. If baby doesn't go to 'bed' until midnight, don't worry.
Just focus on cuddling your baby. If they're a contact napper, just give into it and spend your days snuggling and watching TV. I honestly did very little those first weeks other than loaf around cuddling and breastfeeding.
All babies are different. Mine personally only cried when she wanted something, and was generally a content little thing, but some babies do cry for hours for no reason. Just get some noise cancelling headphones. It will dull it a bit. You can see baby, you don't need to hear it too lol.
Anyway I honestly though I'd feel really stressed, but for me it was love at first sight with my baby. Like, I've never loved another human like I love my baby, she's the love of my life. Those first days were magical for me and I was on cloud 9. It was hard at times (especially cluster feeding) but it all felt very worthwhile.
She's 6 months old now and a delight! She's a happy little soul. Yes it's full on and mentally demanding being needed all the time and I'm always ready when it's time for her bed, but, don't underestimate the absolute delight you'll feel everytime you see your baby's bug gummy smile, and when they laugh for the first time, and when they reach a new milestone.
Also join groups if you can, or go for daily walks when you're ready, even if you're not a social person. It makes the day pass a lot faster!