I am struggling so much

I am struggling with my boyfriend… I’m already a single parent just with a boyfriend attached.. he does nothing at all with us, helps with nothing, including financially except the regular half of rent… doesn’t spend any quality time with his son, or me for that matter.. sits on his phone 24/7 doesn’t even know where the plates are kept because he literally can not do one thing, leaves washing and rubbish everywhere, doesn’t talk to me unless it’s about something HE WANTS to talk about… I’m just at a loss and trying so hard for us to be a good family 😔 I don’t know what to do. I honestly don’t even trust him to be with our baby alone because he is so useless and needs to even be told when to change a nappy!