That's SO much on your plate at the moment. I'm so sorry! You are 100% allowed to vent and rant as much as you like here. It can take a while to bond with a baby when there's been a difficult pregnancy or birth. And you had both! So unfair. Give it time, that connection will come. [Or you will look at her one day and realise it was there all along, but super-well hidden.] Lots of mothers go through this. It will work out OK.
You didn't mention being related to Superman in your post? If you aren't actually bionic, please, please stop worrying about being overwhelmed right now. That's completely normal. People feel that even when they have a supportive partner, family, friends, everything lined up. But life has changed completely with a baby in it. Of course that's overwhelming, and scary. Feeling that way is a proof that you're a good mother, to be honest. If you didn't care, that would be sooo much worse.
You don't have to do this by yourself. It's OK to ask for help. If you have a health visitor or doctor, they would be really good people to talk to. They've heard everything before. And they should be able to support you, or suggest where you can go for more help. Again, that's being a good parent, not "giving in" or "not being able to cope." You need to be around for her for the rest of her life. No good burning out in the first couple of months. You've been through a hard pregnancy. Someone I know who had an emergency c-section described it as like having been in a car crash. In terms of how hard it was on the body and emotions. Except you have to do all your recovery whilst looking after a small squirmy piece of life. That's really hard work.
Big hugs to you, if you'd like them.

I'm glad you posted here. Keep posting. It's OK.