how to deal??

How do you deal with your spouse being a drug addict like what should I do he leaves every night doesn't answer my calls , comes home at like 5 in the morning . I love him a lot but I'm always crying and stressed out . He constantly lies to me and is out doing stuff that I know he could get arrested for. I don't want our baby to grow up without a father . I've tried to help him get clean but now I feel like he's given up. Every time I tell him how I feel he just says sorry and that's it and keeps doing it over and over . I don't know what to do . It makes me sad and depressed and makes me have bad thoughts about myself . I feel like I can't even connect with the baby . We haven't even picked out a name for him 😢