I want to leave.

[Sippinongingernjuice]

I knew things weren’t right before we had a kid. I still pushed to have one together. Things are now awful. It’s my fault. I don’t want to live like this… arguing, nastiness, constant bad atmosphere. I’m miserable relationship wise.

Can I leave with my child? I don’t want 50/50 custody but my partner doesn’t deserve none. I honestly feel trapped and very low. This sucks. I don’t want to drip feed but there’s so much more to this :(

If there’s constant arguing and nastiness, of course you should leave. Given you have a child together, you’ll need to talk about custody. It’s hard to comment further without any more detail about what a court would say about access.

Are you thinking of the child? Is the atmosphere at home affecting your child's quality of life? If so, then leave.

Sounds very toxic op. I think you've answered your own problem there. Get your ducks in a row and make your exit plan