My fiancé doesn't notice me anymore

I been with my fiancé for 5 years now and he doesn't notice me anymore or pays attention to me. He doesn't touch me if I get lucky we have sex once or twice a month now. I feel so unwanted 😢 he tries to pick fights a lot and he kicked me out or mention if I don't like it to get out that he doesn't even know why I'm still around. Then he will mention if I ever leave him my kids will hate me because they love him he is not the biological father.

He told me he doesn't have sex with me because i don't have a job and that I always want sex. I'm a sex addict

I haven't had a job since April because I was let go and I been looking for a job but some how its been difficult to get one right now. The kids are back in school and I am ready to start looking harder for a job. I feel like I failed myself for allowing someone to hurt me 😢