Leaving my fiancé??

My fiancé and I have been together for six years on and off. We’ve lived together since August 2018 and pretty much ever then he’s been basically putting his video games before me. It started as soon as the WiFi was installed. He would ignore me for a couple hours at first but for about a year, he’s been playing on his video games every day when he gets home until he goes to sleep or all day during the weekend. He won’t spend time with me and our son. It’s come to the point where I feel like he is choosing his game before his family and it’s really an issue. I’ve brought it up with him multiple times. Sat him down and said hey this is what is bothering me and I think we should work on fixing it but he just ends up getting mad and ignoring me some more. He’s going to lose his job soon because of things he has going on at work but he refuses to even look at other jobs and will play on his computer instead. I haven’t had a job since getting pregnant and having my son because I had hyperemesis gravidarum and postpartum heart failure. So he’s our only source of income and it’s really a struggle. I’m at my breaking point and I’m really starting to think that I’d be better off moving back home and getting a part time job of some sort instead of staying here. I love Matt but I just can’t have him sit around while we have to feed our baby. Matthew doesn’t deserve to starve because his daddy won’t take a break from his video games. Most people I talk to about it say that I should just move back home so I’d like some advice or suggestions on how I can fix this problem or if it really isn’t worth it and I should just go. Sorry that this was kinda long.