Relationship breakdown with 9 m/o

To cut a long story short - me and my partner never ever used to argue. We had a baby in September 2018 and all we’ve done is bicker since about things like money, sex and parenting styles.

We are really shit at having an “argument” - we never see each other’s point and we just argue, say nasty things, then go silent - he always brushes it under the carpet and then blames me for “carrying it on”. How do you come to a solution when you are both adamant you are in the right? We are pretty miserable and it’s awful because I just want us to be happy again 😕xx