Tired of immature husband 😏😞

I need someone I have no one 😞 I have a 1.5 year old boy and im 18 weeks pregnant 😖

We are young hes gonna be 21 on Monday and im 20 but.. Im just tired of my husband putting his fucken fone before my kid and me no matter what I do to tell to get him to help me, to get him to spend time with us he just dosen't want to he does not understand that he is a dad that he should be putting us before anything else 😖😞 im just done its been along time that I start to feel like I don't love him because he disrespects me he always says im wrong when he does shit.. im just so lost I don't have the guts to let him go and leave my kids with out a father but its also a father that does not want to be with them I don't know what to do.😖😞😭