My gf/baby’s mother treats me like shit most days.

Hanging in there hoping things will change but she’s depressed and shit and disrespectful to me. Like really I pay 100 % of the bills for you, me, my daughter and her daughter my step daughter and I can’t get any respect most days, get treated like shit most days? I wish I was single I’d be better off I could sell my house and pocket $100,000 and live less miserably because of her. I want to see other girls but I also want to wait and try to work it out for my baby daughter. Just venting. Advice and input would be nice thanks